ALL ENGELHARD is pleased to welcome visitors to our Johnson Matthey 1/2 KILO and KILO Definitive Page. While our focus is clearly Engelhard, we recognize that many Engelhard bullion collectors also collect Johnson Matthey bars and ingots. As such, we appreciate the opportunity to present important bullion information on the world’s second most collectible refiner, Johnson Matthey. We hope you welcome this new addition, and we look forward to your thoughts and input!
Our Definitives, below, are organized in presentation of Half Kilo weight class first, followed by Kilo examples. For each weight class, our order of examples is presented by region of origin: United States, Canada, London, Brussels and Australia. Also note that our Definitives reflect what we believe to be the earliest examples first, followed by more recent production examples.
Our Definitives, below, are organized in presentation of Half Kilo weight class first, followed by Kilo examples. For each weight class, our order of examples is presented by region of origin: United States, Canada, London, Brussels and Australia. Also note that our Definitives reflect what we believe to be the earliest examples first, followed by more recent production examples.
| IMAGE | WEIGHT CLASS | OBVERSE | REVERSE | COMMENTARY | SAMPLE SERIAL NUMBERS | ESTIMATED MINTAGE |
 | ½ KILO | [JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [½ KILO] [Serial Number] | [JM Crossed Hammers Logo Repeated Five Full Times] | ½ KILO pressed example produced by Johnson Matthey, United States. | 000079 000109 001252 001979 002080 002406 002425 | <3,000 |
 | 1/2 KILO | [Diamond JM Logo with Crossed Hammers] [½ KILO] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | ½ KILO example produced by Johnson Matthey, Canada. | Serial Absent | <1,000 |
 | 500g | [Diamond JM Logo with Crossed Hammers] [500 G] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 500g example produced by Johnson Matthey, Canada. | Serial Absent | <1,000 |
 | 500g | [JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [Serial Number Sideways on Left] [500g] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 500g example produced by Johnson Matthey, Canada. Originally issued in a blue commemorative dust jacket. | S010858 S011729 | <2,000 |
 | 1/2 KILO | [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1/2 KILO] [999] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1/2 KILO example produced by Johnson Matthey & Mallory, Canada. Originally issued in felt presentation bag, pictured below. | Serial Absent | <50 |
 | 1/2 KILO | [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1/2 KILO] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [999] | Cast Finish | 1/2 KILO example produced by Johnson Matthey & Mallory, Canada. Similar to our above example, though demonstrates reverse placement of oval hallmark and purity stampings. Out thanks to Dan S. for this discovery! | Serial Absent | <10 |
 | ½ KILO | [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1/2 KILO] [999] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1/2 KILO example produced by Johnson Matthey & Mallory, Canada. Similar to our above example, though in taller and more familiar casting shape. | Serial Absent | <25 |
 | 500g | [JOHNSON MATTHEY LONDON Oval Logo] [Mining Tool Logo Inner Oval] [500 grammes] [SILVER BULLION] [999] [Serial Number] | Blank | 500g pressed example produced by Johnson Matthey, London. Originally issued in presentation case, pictured below. | HK10252 HK11088 HK11144 HK12781 HK12782 HK12802 HK12835 | <1,000 |
 | 500g | [World Map Silver Jubilee Logo] [Presented by C.E. Heath & Co Ltd on the occasion of the SILVER JUBILEE of H M Queen Elizabeth II] [1977] | [500 grammes] [- 999 PURE SILVER-] [JMM Hallmark] | 500g Silver Jubilee commemorative bar produced by Johnson Matthey & Mallory, London. Originally issued in a velvet lined presentation box. | Serial Absent | <1,000 |
 | 500g | [GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [MILANO] [JOHNSON MATTHEY & CO. LTD. – LONDON Oval Logo] [CONSOCIATA ITALIANA Inner Oval] [-Ag999 0/00] | Blank, with a border. This particular example was engraved in 1990. | 500 gram MP example produced by Johnson Matthey, Italy. Originally issued in presentation case, pictured below. | Serial Absent | <50 |
 | 500g | [GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [MILANO] [JOHNSON MATTHEY & CO. LTD. – LONDON Oval Logo] [CONSOCIATA ITALIANA Inner Oval] [-Ag999 0/00] | [MP Diamond Logo] [500 GRAMMI] [FINE SILVER] [999.0] [MADE IN ITALY] | 500 gram MP example produced by Johnson Matthey, Italy. Originally issued in presentation case, pictured below. | Serial Absent | <50 |
 | 500g | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [Serial Number] [500GRAMME] | Cast Finish | 500g example produced by Johnson Matthey, London. | J20010 | <100 |
 | 500g | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [500GRAMME] | Cast Finish | 500g example produced by Johnson Matthey, London. Similar to our example above, though lacks a serial number assignment. | Serial Absent | <25 |
 | 500g | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [500 GRM] [SILVER] [Serial Number] | Cast Finish | 500g example produced by Johnson Matthey, London. | JM77693A JM77710A JM77782A | <250 |
 | 500g | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [SILVER] [Serial Number] | Blank | 500g example produced by Johnson Matthey, London. | JM64554A JM2045 A | <500 |
 | 500g | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [J M C] [Serial Number] [JOHNSON MATTHEY ASSAY OFFICE Oval Logo] [Mining Tool Logo Inner Oval] [FINE SILVER] | Blank | 500g example produced by Johnson Matthey, London. | 7520 A | <500 |
 | 1/2 KILO | [BARCLAYS Logo] [BARCLAYS] [FINE SILVER 999] [HALF KILO] [JOHNSON MATTHEY LONDON Oval Logo] [[JOHNSON MATTHEY LONDON with JM Crossed Hammers Logo] | Blank | HALF KILO example produced by Johnson Matthey, London, for Barclays. Originally released in blue velvet Barclays presentation case as shown.  | Serial Absent | <500 |
 | 500g | [JOHNSON MATTHEY & PAUWELS Oval Logo] [BRUXELLES BRUSSEL Inner Oval] [999] [500.] | Cast Finish | 500g example produced by Johnson Matthey & Pauwels, Brussels. | Serial Absent | <500 |
 | 497g g | [.497Kg] [MG Matthey Garrett Circular Hallmark] [.999] | Cast Finish | .497Kg example produced by Matthey Garrett, Australia, in rare serial absent variation. Note the larger purity designation font. | Serial Absent | <100 |
 | 502g | [W&H Flag Logo] [MG Matthey Garrett Circular Hallmark] [502 Gm] [Serial Number] [•999] | Cast Finish | 502g example produced by Matthey Garrett, Australia. Interestingly, the W&H flag represents Walker & Hall of Sheffield, England, pictured below. | 162 | <250 |
 | .499kg | [MG Matthey Garrett Circular Hallmark] [.501Kg] [Serial Number] [•999] | Cast Finish | .499kg example produced by Matthey Garrett, Australia. | 760 | <250 |
 | .501kg | [MG Matthey Garrett Circular Hallmark] [.501Kg] [Serial Number] [•999] | Cast Finish | .501kg example produced by Matthey Garrett, Australia. | 97 | <250 |
 | .501kg | [W&H Flag Logo] [MG Matthey Garrett Circular Hallmark] .[501 kg] [Serial Number] [•999] | Cast Finish | .501kg example produced by Matthey Garrett, Australia. Interestingly, the W&H flag represents Walker & Hall of Sheffield, England, pictured below. | 412 582 | <250 |
 | .501kg | [W&H Flag Logo] [MG Matthey Garrett Circular Hallmark] .[501 kg] [Serial Number] [•999] | Cast Finish | .501kg example produced by Matthey Garrett, Australia. This particular variety demonstrates the larger and less frequently observed W&H flag. Interestingly, the W&H flag represents Walker & Hall of Sheffield, England, pictured below. | 793 | <50 |
 | .500kg | [MG Matthey Garrett Circular Hallmark] [•500Kg] [•999] | Cast Finish | .500kg example produced by Matthey Garrett, Australia, in rare serial absent variaiton. | Serial Absent | <250 |
505g | Cast Finish | 504g example produced by Matthey Garrett, Australia. Demonstrates a rectangular-shaped casting mould. | ||||
 | 507g | [MATTHEY GARRETT Oval Logo] [FINE SILVER 99•9% MIN.] [507 grams] | Cast Finish | 504g example produced by Matthey Garrett, Australia. Demonstrates a rectangular-shaped casting mould. | Serial Absent | <1,500 |
 | 505g | [FINE SILVER 99 9% MIN.] [JOHNSON MATTHEY Oval Logo] [505 grams] | Cast Finish | 505g example produced by Johnson Matthey, Australia. Similar to our above example but demonstrates a more squarely-shaped casting mould, one known example. Our thanks to Sandy ‘FM’ Taylor for this discovery! | Serial Absent | <5 |
 | 496g | [MATTHEY GARRETT Oval Logo] [FINE SILVER 99•9% MIN.] [496 grams] | Cast Finish | 504g example produced by Matthey Garrett, Australia. Similar to our above example but demonstrates a more squarely-shaped casting mould. | Serial Absent | <500 |
 | 501g | [MATTHEY GARRETT Oval Logo] [FINE SILVER 99•9% MIN.] [496 grams] | Cast Finish | 501g example produced by Matthey Garrett, Australia. Similar to our above example but demonstrates a slightly larger font on the purity and ‘MATTHEY GARRETT’ stampings. | Serial Absent | <50 |
 | 513g | [MATTHEY GARRETT Oval Logo] [FINE SILVER 99•9% MIN.] [SCCC Counterstamp] [513 grams] | Cast Finish | 513g example produced by Matthey Garrett, Australia. Similar to our example above but includes the Southern Cross Coins & Commodities counterstamp. Our thanks to Sandy Taylor for the discovery! Additional information regarding the ‘SCCC’ Southern Cross Coins and Commodities counterstamp may be found at this LINK. | Serial Absent | <100 |
 | 501kg | [JM Mining Tool Logo] [999+] [•501Kg] [W&H Flag Logo] [Serial Number] | Cast Finish | .501kg example produced by Johnson Matthey, Australia. Interestingly, the W&H flag represents Walker & Hall of Sheffield, England, pictured below. | 892 | <500 |
 | .5kg | [JOHNSON MATTHEY Oval Logo] [0.5 kg] [999+SILVER] | Cast Finish | .5kg example produced by Johnson Matthey, Australia. | Serial Absent | <500 |
 | .5kg | [JOHNSON MATTHEY Oval Logo] [.5 KG] [999+SILVER] | Cast Finish | .5kg example produced by Johnson Matthey, Australia. Similar to our above example, though the font within ‘JOHNSON MATTHEY’ oval hallmark differs, and the weight class designation is stamped ‘KG’ vs. ‘kg’. | Serial Absent | <1,000 |
 | .5kg | [JOHNSON MATTHEY Oval Logo] [.5 KILO] [999+SILVER] | Cast Finish | .5kg example produced by Johnson Matthey, Australia. Similar to our above example, but weight class designation is ‘KILO’ vs. ‘KG’. | Serial Absent | <1,000 |
 | 1000g | [GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [MILANO] [JOHNSON MATTHEY & CO. LTD. – LONDON Oval Logo] [CONSOCIATA ITALIANA Inner Oval] [-Ag999 0/00] | [MP Diamond Logo] [1000 GRAMMI] [FINE SILVER] [999.0] [MADE IN ITALY] | 1000g MP example produced by Johnson Matthey, Italy. | Serial Absent | <250 |
 | 1000g | [GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [MILANO] [JOHNSON MATTHEY & CO. LTD. – LONDON Oval Logo] [CONSOCIATA ITALIANA Inner Oval] [-Ag999 0/00] | Blank, with a border. | 1000g MP example produced by Johnson Matthey, Italy. We believe this particular example was a custom production piece to allow the reverse engraving. | Serial Absent | <5 |
 | 1 KILO | [JOHNSON MATTHEY SLC Oval Logo] [999 Inner Oval] [1 KILO] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, United States. This is the most recently produced kilo and is no longer in production. | 000011 001493 002955 009323 | <20,000 |
 | 1 KILO | [Diamond JM Logo with Crossed Hammers] [1 KILO] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [999] | Cast Finish | 1 KILO example produced by Johnson Mathey, Canada. Early variety that includes the larger JM diamond hallmark, serial absent and lacks the ‘+’ on purity stamp. Note the wide spacing between the ‘KILO’ letters and the ‘999+’ purity stamp. | Serial Absent | <10 |
 | 1 KILO | [Diamond JM Logo with Crossed Hammers] [1 KILO] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example produced by Johnson Matthey, Canada. Similar to our example above, but includes the ‘+’ on the purity stamp, and demonstrates tighter spacing on it as well. | Serial Absent | <250 |
 | 1 KILO | [Diamond JM Logo with Crossed Hammers] [1 KILO] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example produced by Johnson Matthey, Canada. Note the tighter spacing between letters on the ‘KILO’ stamp and wider spacing on the ‘999+’ purity stamp. | Serial Absent | <50 |
 | 1 KILO | [Diamond JM Logo with Crossed Hammers] [1 KILO] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [999+] | Cast Finish | 1 KILO example produced by Johnson Matthey, Canada. Similar to our above example, but demonstrates reverse placement of the small JM LTD oval stamp and purity stamp. | Serial Absent | <50 |
 | 1 KILO | [Diamond JM Logo with Crossed Hammers] [1 KILO] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example produced by Johnson Matthey, Canada. Similar to some of our above examples but demonstrates a more widely spaced ‘1 KILO’ weight class stamp and tighter spacing between the ‘999+’ purity stamping. | Serial | <25 |
 | 1 KILO | [Diamond JM Logo with Crossed Hammers] [1 KILO] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example produced by Johnson Matthey, Canada. Note the tighter spacing on both the ‘1 KILO’ weight class stamp and the ‘999+’ purity stamp. | Serial Absent | <50 |
 | 1 KILO | [Diamond JM Logo with Crossed Hammers] [1 KILO] [Serial Number] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example in ‘A’ serial suffix, produced by Johnson Matthey, Canada. | 12003 A | <25 |
 | 1 KILO | [Diamond JM Logo with Crossed Hammers] [1 KILO] [Serial Number] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example in ‘D’ serial suffix, produced by Johnson Matthey, Canada. This narrow ‘D’ serial font ran from approximately ‘12000 D’ through ‘13200 D’ with some exceptions. | 12003 D | <250 |
 | 1 KILO | [Diamond JM Logo with Crossed Hammers] [1 KILO] [Serial Number] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example in ‘D’ serial suffix, produced by Johnson Matthey, Canada. Similar to above example, but with more formal ‘D’ suffix font commencing around serial number assignment 13200 D. Please note there are some exceptions to this range assignment as demonstrated in our photo of ingot ‘12806 D’. | 13305 D | <250 |
 | 1 KILO | [Diamond JM Logo with Crossed Hammers] [1 KILO] [Serial Number] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | [.999+ FINE SILVER] [32.15 TR. OZ.] | 1 KILO example in ‘D’ serial suffix, produced by Johnson Matthey, Canada. Similar to our above example, though includes additional purity and weight stampings on the reverse. | 13126 D | <5 |
 | 1 KILO | [Diamond JM Logo with Crossed Hammers] [1 KILO] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example produced by Johnson Mathey, Canada. This example demonstrates the smaller Diamond Hallmark and wider spacing on the ‘999+’ purity stamp. | Serial Absent | <10 |
 | 1kg | [Diamond JM Logo with Crossed Hammers] [1 Kg] [Serial Number Sideways on Right] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1kg example produced by Johnson Matthey, Canada. Similar to above example with exception of opposite serial number placement and ‘1 Kg’ vs. ‘1 KILO’ weight class designation. At least two known examples demonstrate a unique set of initial stamps above the Diamond Logo that we believe were applied post-production, pictured below. | D014384 | <250 |
 | 1kg | [JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [1 Kg] [Serial Number Sideways on Right] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1kg example produced by Johnson Matthey, Canada. This example demonstrates a very rare weight class stamp for this variety. | D016198 | <25 |
 | 1kg | [JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [Serial Number Sideways on Left] [1 Kg] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1kg example produced by Johnson Matthey, Canada. This example is similar to our above example, though has the serial number on the opposite side. | D016793 | <50 |
 | 1 KILO | [JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [Serial Number Sideways on Left] [1 KILO] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example produced by Johnson Matthey, Canada. We have observed examples up to the D031000 range with serial numbers to the left as pictured, and later examples produced with serial placement to the right. | D018291 D019103 D021798 D031000 | <5,000 |
 | 1 KILO | [JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [1 KILO] [Serial Number Sideways on Right] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example produced by Johnson Matthey, Canada. We have observed examples up to the D021XXX range with serial numbers to the left as our similar ingot pictured above, and later examples produced with serial placement to the right. | D039754 | <1,000 |
 | 1 KILO | [Custom TD Bank Hallmark] [Serial Number Sideways on Left] [1 KILO] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example produced by Johnson Matthey, Canada, for Toronto Dominion Bank of Canada. Please note the stamp impressions on the reverse of this variety. | D025536 | <100 |
 | 1 KILO | [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1 KILO] [9990] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example producedby Johnson Matthey & Mallory, Canada. | Serial Absent | <250 |
 | 1 KILO | [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [JM Maple Leaf Logo] [1 KILO] [9990] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example produced by Johnson Matthey & Mallory, Canada. Similar to our above example, but includes the Maple Leaf logo, occasionally observed in varying placement, as shown in the supplemental photo. The varying placement of these stampings resulted from the refinery employee applying the the stamp to the most appropriate location, based on differences in obverse finish. Our mintage estimate is representative of both variations on this example. | Serial Absent | <50 |
 | 1 KILO | [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [JM Maple Leaf Logo] [1 KILO] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example produced by Johnson Matthey & Mallory, Canada. Similar to our above example, though demonstrates a different purity stamp. | Serial Absent | <250 |
 | 1 KILO | [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1 KILO] [999] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example produced by Johnson Matthey & Mallory, Canada. We believe the ‘0007’ serial number on the example below was applied post-produciton. | Serial Absent | <10 |
 | 1 KILO | [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1 KILO] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [999] | Cast Finish | 1 KILO example produced by Johnson Matthey & Mallory, Canada. Similar to our above entry, though demonstrates reverse placement of the purity and smaller JM&M Limited oval hallmark. | Serial Absent | <5 |
 | 1 KILO | [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1 KILO] [999+] [JM&M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] | Cast Finish | 1 KILO example produced by Johnson Matthey & Mallory, Canada. Similar to our above example but includes a ‘+’ on purity stamp. We believe the ‘0007’ serial number on the example below was applied post-produciton. | Serial Absent | <100 |
 | 1 KILO | [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1 KILO] [999+] [JM Maple Leaf Logo] | Cast Finish | 1 KILO example produced by Johnson Matthey & Mallory, Canada. | Serial Absent | <25 |
 | 1 KILO | [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [1 KILO] [999+] [JM Maple Leaf Logo] | [NORTH AMERICAN BULLION EXCHANGE Counterstamp][99.9 PURE] | 1 KILO example produced by Johnson Matthey & Mallory, Canada. This variety demonstrates a North American Bullion Exchange Counterstamp on the reverse. | Serial Absent | <50 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Large Logo] [REFINERS MELTERS Inner Oval] [999] [1 KILO] [SILVER] | Cast Finish | 1 KILO example produced by Johnson Matthey, London. Ingot demonstrates the earlier, larger hallmark. | Serial Absent | <100 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London. Ingot demonstrates the modern, smaller hallmark with only a ‘J’ prefix, instead of the typical ‘JM’ prefix. Matthey must have been ill that day! | J 10025 J 10034 J 10062 | <50 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] | Cast Finish | 1 KILO example produced by Johnson Matthey, London. Ingot demonstrates the modern, smaller hallmark. Similar to our above example but lacks a serial number. | Serial Absent | <50 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London, in large JM serial prefix font. Believed to be the earliest production variety of the JM serial prefix kilo ingots. Note the unique shape of the casting mould and crater-like finish compared to the more common JM prefix kilo ingots presented below.   | JM 68882 A | <100 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London. Similar to the more commonly produced examples, but of a unique casting mould and three digit serial number assignment, And a very tight serial range. Note ingot ‘JM 399 A’ demonstrates different ‘9’ serial number fonts, and casting mould differences are demonstrated in our four-digit serial number entry just below. JM393A sold via eBay auction for $2,250.00 on 3/19/23. JM394A sold privately for $2,250.00 on 4/23/23. | JM 385 A JM 388 A JM 392 A JM 393 A JM 394 A JM 399 A JM 400 A JM 402 A JM 766 A JM 790 A JM 803 A | <50 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London. Similar to our example above, but includes a four digit serial number assignment. Casting mould variances may be observed in the below photos, although early examples such as JM 1155 A demonstrate the mould of the above three-digit serial variety.  | JM 1155 A JM 1854 A JM 1860 A JM 2750 A JM 2768 A | <50 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London. | JM 10919A JM 46311A JM 65200A JM 78971A | <2,000 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [Serial Number] | Cast Finish | Similar to the above 1 KILO example produced by Johnson Matthey, though this variety lacks the “A” following the serial number. | JM 79130 JM 79483 JM 79506 | <100 |
 | 1 KILO | JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [SHARPS PIXLEY LONDON Circular Counterstamp] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London, for bullion broker Sharps Pixley. | JM 63504 A JM 63505 A JM 66201 A JM 66205 A JM 66217 A JM 66237 A | <250 |
 | 1 KILO | JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [SHARPS PIXLEY LONDON Circular Counterstamp] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London, for bullion broker Sharps Pixley. This ingot demonstrates the larger ‘JM’ serial prefix font. | JM 67587 A JM 68595 A | <100 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [SP Sharps Pixley Counterstamp] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London, for bullion broker Sharps Pixley. This ingot demonstrates the more modern Sharps Pixley counterstamp. | JM 81171 A | <100 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [ROOD Logo] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London, for ROOD. This ingot demonstrates the larger ‘JM’ serial prefix font. | JM 67840 A JM 67842 A | <100 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [LEU BANK ZURICH Counterstamp] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London. More modern JM hallmark and also includes LEU Bank Zurich counterstamp. | JM77074 JM77239 | <100 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [CREDIT SUISSE Counterstamp] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London. More modern JM hallmark and also includes Credit Suisse counterstamp. | JM 77983 | <50 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [Multiple London Hallmarks] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London. Produced in honor of the 1977 Jubilee Year. | JM 77569 A | <25 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [1 KILO] [SILVER] [Serial Number] | [THE QUEEN’S SILVER JUBILEE] [Image of Queen Elizabeth] [1952] [1977] | 1 KILO example produced by Johnson Matthey, London, per above entry, with THE QUEEN’S SILVER JUBILEE 1952-1977 for Queen Elizabeth. Issued in presentation box, pictured below. Note the custom engraving applied to the reverse, also pictured.    | JM 77177 A JM 77123 A | <25 |
 | ~ 1 KILO | [JOHNSON MATTHEY & CO. LTD. LONDON Oval Logo] [9990 Inner Oval] [SILVER] [Serial Number] | Blank | Approximate 1 kilo class example produced by Johnson Matthey, London. This example demonstrates the older Johnson Matthey & Co. Ltd. London oval hallmark and a polished surface finish. | JM 7603 | <100 |
 | 32.08oz | [JOHNSON MATTHEY & CO. LTD. LONDON Oval Logo] [9990 Inner Oval] [SILVER] [Serial Number] | Blank | 32.08oz example produced by Johnson Matthey, London. Similar to our example above, though demonstrates a five-digit serial number assignment with letter ‘A’ suffix. | JM 10991 A JM 13632 A JM 13633 A JM 13637 A JM 13640 A JM 22556 A | <500 |
 | 32.31oz | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [SILVER] [Serial Number] | Blank | 32.31oz example produced by Johnson Matthey, London. This example measures 122mm x 18mm x 42mm and demonstrates the more modern JM London hallmark. It also has a polished surface finish and recent serial number range assignment. | JM 64720 A | <250 |
 | 32.25oz | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [SILVER] [Serial Number] | Blank | 32.25oz class example produced by Johnson Matthey, London, for ROOD. Similar to our two examples, directly above. | JM 22623 A | <25 |
 | 32.25oz | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [SILVER] [Serial Number] | Blank | 32.25oz class example produced by Johnson Matthey, London. | JM 2044 A | <25 |
 | 32.25oz | [JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [SILVER] [ROOD Logo] [Serial Number] | Blank | 32.25oz class example produced by Johnson Matthey, London, for ROOD. Similar to our two examples, directly above. | JM 2072 A | <50 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [REFINERS MELTERS Inner Oval] [999] [1 KILO] [SILVER] [Serial Number] | Cast Finish | 1 KILO example produced by Johnson Matthey, London. These examples have serial numbers which include a JM [Johnson Matthey] prefix and include a letter suffix designation. Note the more modern JM London Hallmark. | JM 66436 A JM 68598 A JM 73079 A JM 73137 A JM 74076 A JM 74200 A | <500 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [REFINERS MELTERS Inner Oval] [999] [1 KILO] [SILVER] | Cast Finish | 1 KILO example produced by Johnson Matthey, London. Serial absent variation of our above example. | Serial Absent | <100 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [REFINERS MELTERS Inner Oval] [999] [1 KILO] [SILVER] | Cast Finish | 1 KILO example produced by Johnson Matthey, London. A very unique and desirable example, this ingot’s ‘SILVER’ stamp demonstrates a reverse letter ‘E’ below the weight designation. | Serial Absent | 1 |
 | 1 KILO | [JOHNSON MATTHEY LONDON Oval Logo] [REFINERS MELTERS Inner Oval] [999] [1 KILO] [JMC] [Serial Number] [SILVER] | Blank | 1 KILO example produced by Johnson Matthey, London. | 76959 76965 | <100 |
  | 1 KILO | [JOHNSON MATTHEY LONDON with JM Crossed Hammers Logo] [1 KILO] [SILVER BULLION] [999] [Serial Number] | Blank | 1 KILO pressed example produced by Johnson Matthey, London. | KG11096 KG11727 KG12059 KG12273 | <500 |
  | 1 KILO | [JOHNSON MATTHEY LONDON with JM Crossed Hammers Logo] [1 KILO] [SILVER BULLION] [999] [Serial Number] | [Custom Logo] | 1 KILO pressed example produced by Johnson Matthey, London. Similar to our above example, though includes a custom logo. Issued in velvet presentation box, pictured below. | KG12060 | <100 |
 | 1 KILO | [JOHNSON MATTHEY & PAUWELS Oval Logo] [999] [1000] | Cast Finish | Early variety approximate 1000g example produced by Johnson Matthey & Pauwels, Brussels. | Serial Absent | <100 |
 | 1 KILO | [JOHNSON MATTHEY & PAUWELS Oval Logo] [BRUXELLES BRUSSEL Inner Oval] [999] [1000] | Cast Finish | 1000g example produced by Johnson Matthey & Pauwels, Brussels. Similar to our example above, though demonstrates a different ‘JOHNSON MATTHEY & PAUWELS’ oval logo. | Serial Absent | <100 |
 | 1000g | [JOHNSON MATTHEY & PAUWELS Oval Logo] [BRUXELLES BRUSSEL Inner Oval] [999] [1000.] | Cast Finish | 1000g example produced by Johnson Matthey & Pauwels, Brussels. Similar to our example above, though includes a decimal suffix on weight class stamping. Also found in other approximate weight class variations such as 999g and 1002g. | Serial Absent | <250 |
 | 1 KILO | [JOHNSON MATTHEY & PAUWELS Oval Logo] [BRUXELLES BRUSSEL Inner Oval] [999] [1977] [1000] | Cast Finish | Approximate 1000g example produced by Johnson Matthey & Pauwels, Brussels in landscape variation. | 1977 | <100 |
 | 1kg | [JOHNSON MATTHEY Oval Logo] [1 KG] [999+SILVER] | Cast Finish | 1kg example produced by Johnson Matthey, Australia. | Serial Absent | <1,000 |
  | 1kg | [JOHNSON MATTHEY Oval Logo] [1 KG] [999+SILVER] | Cast Finish | 1kg example produced by Johnson Matthey, Australia. Similar to our example above, though demonstrates a striated reverse. Our thanks to Sandy ‘FM’ Taylor for this discovery! | Serial Absent | <25 |
  | 1kg | [Custom ‘elecraft’ Logo] [1 KG] [999+SILVER] | [JOHNSON MATTHEY Oval Logo] | Exceedingly rare 1kg example produced by Johnson Matthey, Australia for Elecraft company. Elecraft is currently one of Australia’s largest electrical contractors. One known example. | Serial Absent | <50 |
 | 1kg | [JOHNSON MATTHEY Oval Logo] [1.KG] [999+SILVER] | Cast Finish | 1kg example produced by Johnson Matthey, Australia. Similar to our above examples, but includes a ‘.’ between ‘1’ and ‘KG’. | Serial Absent | <100 |
 | 1kg | [JOHNSON MATTHEY Oval Logo] [1.KILO] [999+SILVER] | Cast Finish | 1kg example produced by Johnson Matthey, Australia. | Serial Absent | <10 |
 | 1kg | [JOHNSON MATTHEY Oval Logo] [1KG] [999+SILVER] | Cast Finish | 1kg example produced by Johnson Matthey, Australia. Note the font within ‘JOHNSON MATTHEY’ oval hallmark differs from our examples above, with more spacing between the letters. Our thanks to Sandy MF Taylor for this discovery! | Serial Absent | <50 |
 | 1kg | [JOHNSON MATTHEY Oval Logo] [1KG] [999+SILVER] | Cast Finish | 1kg example produced by Johnson Matthey, Australia. Similar to our above example, though demonstrates a larger weight class font. | Serial Absent | <100 |
 | 1kg | [JOHNSON MATTHEY Oval Logo] [1KG] [999+SILVER] | Cast Finish | 1kg example produced by Johnson Matthey, Australia. Similar to our example above, though includes spacing between the ‘1’ and ‘KG’ weight stampings. Our thanks to Sandy ‘FM’ Taylor for this discovery! | Serial Absent | <25 |
 | 1kg | [JOHNSON MATTHEY Oval Logo] [1 KG] [999+SILVER] | Cast Finish | 1kg example produced by Johnson Matthey, Australia. Note the weight class designation is stamped ‘kg’ vs. ‘KG’. Note the font within ‘JOHNSON MATTHEY’ oval hallmark includes more spacing between the letters. Thanks to M.E. for this discovery! | Serial Absent | <50 |
 | 1kg | [JOHNSON MATTHEY Oval Logo] [1.kg] [999+SILVER] | Cast Finish | 1kg example produced by Johnson Matthey, Australia. Similar to our above example, but includes a ‘.’ between ‘1’ and ‘KG’. Note the font within ‘JOHNSON MATTHEY’ oval hallmark includes more spacing between the letters. | Serial Absent | <50 |
 | 1•004kg | [FINE SILVER 99•9% MIN.] [JOHNSON MATTHEY LTD AUSTRALIA REFINERS Oval Logo] [1.004 Kg] | Cast Finish | 1.004kg example produced by Johnson Matthey Ltd., Australia. Seen in approximate 1kg weight class. | Serial Absent | <250 |
 | 0•999kg | [FINE SILVER 99•9% MIN.] [TUBEMAKERS SILVER BAR] [JOHNSON MATTHEY LTD AUSTRALIA REFINERS Oval Logo] [0.999 Kg] | Cast Finish | 0.999kg example produced by Johnson Matthey Ltd., Australia with Tubemakers of Australia, Ltd. counterstamp. Seen in approximate 1kg weight class. Additional information regarding the Tubemakers of Australia, Ltd. counterstamp may be found at this LINK. | Serial Absent | <10 |
 | 1.003kg | [FINE SILVER 99•9% MIN.] [MATTHEY GARRETT Oval Logo] [1.003 Kg] | Cast Finish | 1.003kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class. | Serial Absent | <1,000 |
 | 1.003kg | [FINE SILVER 99•9% MIN.] [MATTHEY GARRETT Oval Logo] [1.003 Kg] | Cast Finish | 1.003kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class. | Serial Absent | <250 |
 | 1.008kg | [FINE SILVER 99•9% MIN.] [JOHNSON MATTHEY Oval Logo] [1.008 Kg] | Cast Finish | 1.008kg example produced by Johnson Matthey, Australia. Seen in approximate 1kg weight class. | Serial Absent | <1,000 |
 | 1.005kg | [FINE SILVER 99•9% MIN.] [MATTHEY GARRETT Oval Logo] [1.005] | ‹‹Cast Finish | 1.005kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class, this particular variety does not demonstrate the ‘kg’ weight designation suffix. | Serial Absent | <1,000 |
 | 1.005kg | [FINE SILVER 99•9% MIN.] [MATTHEY GARRETT Oval Logo] [1•005 kg] | Cast Finish | 1.005kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class. | Serial Absent | <1,000 |
 | 1.004kg | [FINE SILVER 99•9% MIN.] [MATTHEY GARRETT Oval Logo] [1•004 KG] | Cast Finish | 1.004kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class. | Serial Absent | <500 |
 | 1.009kg | [FINE SILVER 99•9% MIN.] [MATTHEY GARRETT Oval Logo] [1.009 kg] | Cast Finish | 1.003kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class. | Serial Absent | <250 |
 | 1.003kg | [FINE SILVER 99•9% MIN.] [MATTHEY GARRETT Oval Logo] [SCCA Counterstamp] [1.003 kg] | Cast Finish | 1.003kg example produced by Matthey Garrett, Australia. Seen in approximate 1kg weight class. Similar to our example above, this example demonstrates the SCCC [Southern Cross Coins & Commodities ] counterstamp. At least one known example, pictured below, demonstrates an inverted SCCC stamp. | Serial Absent | <200 |
 | 32.095oz | [32.095OZ] [MG Oval] [.999 kg] [.999] | Cast Finish | Approximate 1kg example produced by Matthey Garrett, Australia. | Serial Absent | <50 |
  | .996KG 1.002KG | [MG Oval] [•996KG] [999] [Serial Number] [Serial Number] [MG Oval] [•999] [1•002KG] | Cast Finish | Approximate 1kg example produced by Matthey Garrett, Australia. Seen in several variations of stamp placement and some examples lack a serial number. | 85 124 | <200 |
 | 1.002Kg | [MG Oval] [•999] [1•002Kg] | Cast Finish | Approximate 1kg example produced by Matthey Garrett, Australia. This example varies slightly from the one above due to smaller MG hallmark, purity stamp font, Kg vs. KG weight designation and lack of serial number. | Serial Absent | <200 |
 | 0.995Kg | [MG Oval] [999] [0.995Kg] | Cast Finish | Approximate 1kg example produced by Matthey Garrett, Australia. Similar to our example above, though demonstrates different stamp placement and font character. | Serial Absent | <50 |
 | 1.001Kg | [MG Oval] [1•001Kg] [Serial Number] [999] | Cast Finish | Similar to our example above, though includes serial number and different stamp placement and font character. | 802 | <50 |
 | 1.002Kg | [W&H Flag Logo] [MG Oval] [1•002Kg] [Serial Number] [•999] | Cast Finish | Approximate 1kg example produced by Matthey Garrett, Australia. Similar to our example above but includes a serial number and the the W&H flag logo. The flag represents Walker & Hall of Sheffield, England, pictured below. | 810 | <50 |
 | 1.001Kg | [W&H Flag Logo] [MG Oval] [1•002Kg] [Serial Number] [•999] | Cast Finish | Approximate 1kg example produced by Matthey Garrett, Australia. Similar to our example above but includes a larger variation of the W&H flag logo. The flag represents Walker & Hall of Sheffield, England, pictured below. Our thanks to Josh M. for the discovery of this variation! | 783 1083 | <25 |
