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AG | ODD SIZE

sw
ALL
ENGELHARD
is pleased to welcome visitors to our Johnson Matthey Odd Size 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 region of origin. Also note that our Definitives reflect what we believe to be the earliest examples first, followed by more recent production examples.

 
IMAGEWEIGHT
CLASS
OBVERSEREVERSECOMMENTARYSAMPLE
SERIAL
NUMBERS
ESTIMATED
MINTAGE
1g JM1g[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [1 GRAM] [Serial Number][JM Crossed Hammers Logo Repeated Five Full Times]1 gram example produced by Johnson Matthey, United States.B8660
E1609
E8914
E9487
F8432
G0140
<10,000
JM 1g FIRST UNION1g[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [1 GRAM] [Serial Number][FIRST UNION Logo]1 gram example produced by Johnson Matthey, United States, for First Union.
A0396
A0994
<1,000
1g JM Royal Bank Toned 1g JM Royal Bank1g[ROYAL BANK Custom Logo] [ROYAL BANK] [FINE SILVER 999] [1 GRAM][Serial Number] [ROYAL BANK Custom Logo Repeated Nine Times] [JM Crossed Hammers Logo] 1 gram example produced in 1989 by Johnson Matthey, United States, for Royal Bank. Serial number assignment variations observed.
A1087
012740
<500
unnamed-13.23995g[Circular JM&M Johnson Matthey & Mallory Logo] [ASSAYERS REFINERS] [FINE SILVER 999] [50 GRAINS]UNKNOWN50 grains [3.23995 grams]  example produced by Johnson Matthey & Mallory, Canada.Serial Absent<250
5-Gram (g) Johnson Matthey Silver Bar, Variety A, Obverse5-Gram (g) Johnson Matthey Silver Bar, Variety A, Reverse5g[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [1 GRAM] [Serial Number]Blank5 gram example produced by Johnson Matthey, United States.027426
056076
065073
114437
125848
165998
184448
<100,000
JM 5g Oil Derrick5g[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [1 GRAM] [Serial Number][Heart Background Image] [Oil Rig Custom Image] [USA]5 gram example produced by Johnson Matthey, United States.000693<3,000
5g JM Shipwreck5g[Image of Spanish galleon] [999 FINE SILVER] [5 GRAMS] [Serial Number] [JM Crossed Hammers Logo]Blank5 gram example produced in 1980 by Johnson Matthey, United States. Minted from bullion containing authentic treasure silver recovered from the wreck site of a Spanish treasure fleet, lost on July 30, 1715. Original order form mentions silver pendant and gold variations available as well. While some sources report 20k mintage, All Engelhard has not observed a serial higher than 7k, nor a gold variation. Original order form pictured below.
20140618_result37
20140618_result39
000445
001185
002922
004648
006097
006975
<7,000
5-Gram (g) Johnson Matthey Silver Bar, Variety B, Obverse5-Gram (g) Johnson Matthey Silver Bar, Variety B, Reverse5g
[JM Crossed Hammers Logo] [JOHNSON MATTHEY [ASSAYERS & REFINERS] [FINE SILVER 999] [1 GRAM] [Serial Number][JM Crossed Hammers Logo Repeated Six Full Times]5 gram example produced by Johnson Matthey, United States. Appears most serial numbers are in the 500,000 range, whereas earlier variety appear to end at just under 200,000. We speculate JM skipped serial numbers.200xxx
201xxx
53xxx8
572472
586387
623626
633297
644346
<100,000
5g JM Spectronic Superstar5g[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [1 GRAM] [Serial Number][SPECTRONIC SUPERSTAR Space Theme Logo]5 gram example produced by Johnson Matthey, United States, for Spectronic Superstar.
0148
0181
0189
0217
<500
5g-JM-Koalagram5g[Koalagram] [5 gm] [FINE SILVER] [999] [JM Crossed Hammers Logo] [Serial Number]
[Image of a Koala Bear]5 gram example produced by Johnson Matthey, United States.00049
00768
<1,000
100 grains JMM 6.48 grams100 grains
6.48g
[Circular JM&M Johnson Matthey & Mallory Logo] [ASSAYERS REFINERS] [FINE SILVER 999] [100 GRAINS]Blank Assumed100 grains | 6.48g example produced by Johnson Matthey & Mallory, Canada.Serial Absent<100
JM 10g10g[JM Crossed Hammers Logo] [ASSAYERS REFINERS] [FINE SILVER 999] [10 GRAMS] [Serial Number]Blank
10 gram example produced by Johnson Matthey, United States. 001179
001859
003594
<3,000
JM 10g ELECTREX10g[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [10g][ELECTREX Custom Font] [’84’] [Serial Number]10 gram example produced by Johnson Matthey, United States, for ELECTREX. Possibly produced in London.
WE0144<250
10g JM10g[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [10 GRAMS] [Serial Number][JM Crossed Hammers Logo Repeated Five Full Times]10 gram example produced by Johnson Matthey, United States. 019596
020272
020885
023369
<5,000
10-Gram (g) Johnson Matthey Silver Bar, JAMC, Obverse10-Gram (g) Johnson Matthey Silver Bar, JAMC, Reverse10g[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [10 GRAMS] [Serial Number][JMAC ® Custom Logo Repeated Six Full Times]10 gram example produced by Johnson Matthey, United States, JMAC ®.000489<1,000
JM 10g NERCO10g[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [10 GRAMS] [Serial Number][N Custom NERCO Logo] [NERCO] [NERCO MINERALS CO.]10 gram example produced by Johnson Matthey, United States, for Nerco Minerals Company.
1247<2,000
JMM 10g10g[Circular JM&M Johnson Matthey & Mallory Logo] [ASSAYERS REFINERS] [FINE SILVER 999] [10 GRAMS]Blank10 gram example produced by Johnson Matthey & Mallory, Canada.Serial Absent<1,000
screen-shot-2016-10-17-at-9-53-33-am10g[MG Matthey Garrett Circular Hallmark] [FINE SILVER] [999] [10 GRAMS]Matthey Garrett10 gram pendant produced by Matthey Garrett, Australia.Serial Absent<200
Half Oz JM Old1/2oz[JM Crossed Hammers Logo] [FINE SILVER 999] [1/2 OZ.] [Serial Number]Blank1/2oz example produced by Johnson Matthey, United States.001373
001432
001607
004820
005014
005607
007427
007686
<5,000
Screen Shot 2017-04-17 at 10.12.30 AM1/2oz

[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [1/2 OUNCE TROY] [Serial Number]

[Swish ® Custom Logo]

Exceedingly rare 1/2oz example produced by Johnson Matthey for Swish ®.  We are unaware what the Swish ® logo represents and welcome any insight from our collector community.

1369<50
JM Half Oz1/2oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [1/2 OUNCE TROY] [Serial Number][Square JM Logo and Mining Tool Oval Logo Repeated Five Full Times]1/2oz example produced by Johnson Matthey, United States.010976
013097
016669
018865
<10,000
Half OZ JM Dee Gold Mining1/2oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [1/2 OUNCE TROY] [Serial Number][DEE GOLD MINING CO.] [NEVADA] [1984]1/2oz example produced by Johnson Matthey, United States, for Dee Gold Mining Company.
00131<250
20g JM WB Reverse20g[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [20 GRAMS] [Serial Number][WB Custom Logos Repeated Multiple Times]20 gram example produced by Johnson Matthey, United States, reportedly for a European Bank.
000363<100
20g JMM20g[Circular JM&M Johnson Matthey & Mallory Logo] [ASSAYERS REFINERS] [FINE SILVER 999] [20 GRAMS]Blank without border20 gram example produced by Johnson Matthey & Mallory, Canada.Serial Absent<1,000
unnamed-120g[GUARANTEED BY] [Johnson Matthey] [LONDON] [REFINERS & ASSAYERS][JMC&Co.] [Lion Passant Sterling Hallmark] [Lion Head London Hallmark] [London Assay Office ‘r’ Hallmark]Exceedingly rare 20g sterling silver example produced by Johnson Matthey, London.  One known example.Serial Absent<50
unnamed-150g[GARANTITO] [DALLA] [METALLI PRIZIOSI spa] [PADERNO DUGNANO] [MILANO] [JOHNSON MATTHEY & CO. LTD. – LONDON Oval Logo] [CONSOCIATA ITALIANA Inner Oval] [-Ag999 0/100]Blank with borderEarliest variety 50 gram MP example produced by Johnson Matthey, Italy.  This example is not as thick as the other two later produced bars without blank reverse, pictured below.  It demonstrates a glossy, not matte finish.  A former director of MP explained the difference in surface finish resulted from silver foil production method vs. silver powder method for the later produced examples.  Please note differences in font, especially purity stamping character observed at bottom of obverse.Serial Absent<100
50g JM MP Itlay Blank Reverse50g[GARANTITO] [DALLA] [METALLI PRIZIOIS S.p.A.] [PADERNO DUGNANO] [MILANO] [JOHNSON MATTHEY & CO. LTD. – LONDON Oval Logo] [CONSOCIATA ITALIANA Inner Oval] [-Ag999 0/00]Blank with border50 gram MP example produced by Johnson Matthey, Italy.  This example is not as thick as the two later produced bars without blank reverse, pictured below.  It demonstrates a glossy, not matte finish.  A former director of MP explained the difference in surface finish resulted from silver foil production method vs. silver powder method for the later produced examples.  Please note differences in font, especially purity stamping character observed at bottom of obverse.  These differences are shared with the two blank reverse examples, pictured below.Serial Absent<250
Screen Shot 2016-03-07 at 9.36.51 AM50g[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] [50 GRAMMI] [FINE SILVER] [999.0] [MADE IN ITALY]50 gram MP example produced by Johnson Matthey, Italy.  Originally issued in presentation case, pictured below.unnamed-9Serial Absent<500
Screen Shot 2016-03-07 at 9.38.06 AM50g[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] [50 GRAMMI] [FINE SILVER] [999.0] [MADE IN ITALY]50 gram MP example produced by Johnson Matthey, Italy.  This variety demonstrates a slightly different obverse font as well as a unique 999,0 purity designation as opposed to the more common 999.00 designation, listed above.Serial Absent<100
Screen Shot 2017-01-24 at 5.39.46 PM3/4oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [¾ OUNCE TROY] [Serial Number][Swish ® Custom Logo]Exceedingly rare 3/4oz example produced by Johnson Matthey for Swish ®.  We are unaware what the Swish ® logo represents and welcome any insight from our collector community.  One known example.001035<100
IMG_44052oz[J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [2 OZ.] [999]Cast FinishExceedingly rare 2oz example produced by Johnson Matthey, Canada.  One known example.Serial Absent<50
JM 2oz 22oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [2 OUNCES TROY] [Serial Number]Blank2oz example produced by Johnson Matthey, United States. Early variety with three lines within purity designation box. Bar width and height are of standard 1oz bar dimension, though thickness is doubled.
000338
003342
004348
005413
005817
<5,000
JM 2oz2oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [2 OUNCES TROY] [Serial Number][JM Crossed Hammers Logo Repeated Six Full Times]2oz example produced by Johnson Matthey, United States. Bar width and height are of standard 1oz bar dimension, though thickness is doubled.
006244
008233
010204
011404
012160
015973
016487
<10,000
2oz  JM The Printing House2oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [2 OUNCES TROY] [Serial Number][COPIES IN MINUTES, MINUTES AWAY] [Printing House Custom Logo] [THE PRINTING HOUSE] [THANK YOU] [Celebration 25 Years in Business]2oz example produced in 1986 by Johnson Matthey, United States, for The Printing House. Bar width and height are of standard 1oz bar dimension, though thickness is doubled.000034
000054
<100
alexander's 2oz2oz[Custom Image of Woman and Building] [Alexander’s][$50] [ALEXANDER’S] [$50] [FINE SILVER] [2 OZ.TR.] [JM Crossed Hammers Logo] [MERCHANDISE CONVERTIBLE] [GIFT INGOT] [.999 FINE] [Serial Number]1oz example produced by Johnson Matthey, United States, for Alexander’s.000612<1,000
1oz JM HB Fuller Company2oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [2 OUNCES TROY] [Frosted Rectangle][H.B. Fuller Company Custom Logo] [H.B. Fuller Company]2oz example produced by Johnson Matthey, United States, for the H.B. Fuller Company.
Serial Absent<100
80g JM London80g[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval]Cast Finish80 gram example produced by Johnson Matthey, London.Serial Absent<100
SONY DSC3oz[JMC Rectangular Logo] [Maple Leaf Logo] [999+] [3OZ]Cast Finish3oz example produced by Johnson Matthey, Canada. A collector set of 3oz, 4oz, 5oz, 7oz and 10oz ingots was offered in 1965 by Guardian Trust Company of Montreal, Canada, for $57.03 not including postage – documented at this LINK. The collector set was available in two sizes, which may be found at this LINK.
Serial Absent<5,000
3oz NO MPALE3oz[JMC Rectangular Logo] [999+] [3OZ]Cast Finish
3oz example produced by Johnson Matthey, Canada. Considerably more rare variation of our example above. These ingots were also offered in a collector set which may be found at this LINK.Serial Absent<500
3oz JM London3oz[GUARANTEED BY] [JOHNSON MATTHEY] [LONDON] [REFINERS TO THE BANK OF ENGLAND][DOW BANKING CORPORATION] [Diamond Shaped DOW Custom Logo] [THREE OUNCES] [FINE SILVER]3oz example produced by Johnson Matthey, London, for Dow Banking Corporation. Originally issued in either a custom sleeve or blue collector case, pictured below.
20140528_JM3ozbarCover_opt
unnamed
Serial Absent<500
Screen Shot 2015-03-19 at 12.47.32 PM100g[100 GRAMS] [999] [FINE SILVER] [JOHNSON MATTHEY & MALLORY LIMITED] [ASSAYERS AND REFINERS] [CANADA] [Serial Number]Blank
100 gram example produced by Johnson Matthey & Mallory, Canada.000064
000297
000335
001103
001228
001408
001703
001707
<2,000
100g JM London100g[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval]Cast Finish100 gram example produced by Johnson Matthey, London.Serial Absent<500
100g JM National Bank of Commerce100g[NATIONAL BANK OF COMMERCE] [OF SEATTLE] [NBC Vertical Oval Logo] [100 GRMS] [FINE SILVER][GUARANTEED BY] [JOHNSON MATTHEY] [LONDON] [REFINERS TO THE BANK OF ENGLAND]100 gram example produced by Johnson Matthey, London, for National Bank of Commerce.Serial Absent<1,000
100g JM Schweizerischer100g[SCHWEIZERISCHER BANKVEREIN] [Schweixerischer Bankverin Boxed Key Logo 1872] [100GRAMM] [999][GUARANTEED BY] [JOHNSON MATTHEY] [LONDON] [REFINERS TO THE BANK OF ENGLAND]100 gram example produced by Johnson Matthey, London, for Schweizerischer Bankverein.Serial Absent<1,000
Screen Shot 2015-11-24 at 9.23.51 AM100g[JMC Diamond Logo] [FINE SILVER] [100 GRMS] [Crossed Hammers Logo][GUARANTEED BY] [JOHNSON MATTHEY] [LONDON] [REFINERS TO THE BANK OF ENGLAND]100 gram example produced by Johnson Matthey, London. Serial Absent<500
100g JM LONDON100g[JMC Diamond Logo] [FINE SILVER] [100 GRMS] [Crossed Hammers Logo][GUARANTEED BY] [JOHNSON MATTHEY] [LONDON] [REFINERS & ASSAYERS]100 gram example produced by Johnson Matthey, London. Issued with presentation case, pictured below.

IMG_7582
Serial Absent<500
JM 100g BOXED100g[JOHNSON MATTHEY BANKERS LIMITED with Crossed Hammers Logo] [100 grammes] [999 FINE SILVER BULLION] [Serial Number][999 Oval Repeated Three Times] [Crossed Hammers Logo Repeated Four Times] [999 Oval Repeated Three Times]100 gram pressed example produced by Johnson Matthey, London. Originally issued in presentation case, pictured below.

JM 100g BOX
501585
501660
501644
<500
100g JM London Blank Engraved Reverse100g[JOHNSON MATTHEY BANKERS LIMITED with Crossed Hammers Logo] [100 grammes] [999 FINE SILVER BULLION] [Serial Number][PRESENTED BY STE PIERRE SMIRNOFF FLS TO BRIAN & GRETA ASHMORE ON THE OCCASION OF THEIR SILVER WEDDING ANNIVERSARY] [1st NOVEMBER 1977]100 gram pressed example produced by Johnson Matthey, London. A Blank variation of our example, above, sourced specifically for the custom engraving. Originally issued in presentation case, pictured below.
100g JM London Blank Engraved Reverse Case
506263<100
100g JM 1977100g[SCANDINAVIAN BANK LIMITED LIMITED Oval Logo] [1977 Inner Oval] [100 grammes] [999 FINE SILVER BULLION] [Serial Number][999 Oval Repeated Three Times] [Crossed Hammers Logo Repeated Four Times] [999 Oval Repeated Three Times]100 gram pressed example produced by Johnson Matthey, London, for Scandinavian Bank, Limited. 350 examples produced, originally issued in presentation case, pictured below. Issuance certificate viewable at this LINK.

IMG_7565IMG_7558
288
100g Matthey Garrett100g[MG Circular Logo] [100 grammes] [Matthey Garrett] [999 FINE SILVER]Pebbled Finish100g example produced by Matthey Garrett, Australia. Originally issued in presentation box, pictured below.
100g MG JM Box
Serial Absent<500
screen-shot-2016-10-24-at-4-07-39-pm100g[MG Circular Logo] [999] [100 Gm]BlankExceedingly rare 100g example produced by Matthey Garret, Australia.Serial Absent<50
Screen Shot 2016-05-17 at 8.35.25 AM100g[GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [-MILANO-] [JOHNSON MATTHEY & CO. LTD +LONDON+] [CONSOCIATA ITALIANA] [-Ag999 0/00][MP Diamond Logo] [100 GRAMMI] [FINE SILVER] [999,0] [MADE IN ITALY]100 gram MP example produced by Johnson Matthey, London, for Metalli Preziosi S.p.A.  Originally issued in presentation box, pictured below.
unnamed-2
Serial Absent<500
100g JM Italy MP100g[GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [-MILANO-] [JOHNSON MATTHEY & CO. LTD +LONDON+] [CONSOCIATA ITALIANA] [-Ag999 0/00]Blank with border100 gram MP example produced by Johnson Matthey, London, for Metalli Preziosi S.p.A.
Serial Absent<500
Screen Shot 2016-08-11 at 10.17.33 AM100g[GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [-MILANO-] [JOHNSON MATTHEY & CO. LTD +LONDON+] [CONSOCIATA ITALIANA] [-Ag999 0/00][CCC] [CONSTRUZIONI CIVILI CERASI] [SOCIETA PER AZIONI] [ROMA] [1951-1981] [100 GRAMMI ARGENTO 9990/00]100 gram MP example produced in 1981 by Johnson Matthey, London, for Metalli Preziosi S.p.A. in commemoration of the civili construction ‘joint stock’ company Construzioni Civili Cerasi.Serial Absent<50
100g-JM-ITALIA100g[GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [-MILANO-] [JOHNSON MATTHEY & CO. LTD +LONDON+] [CONSOCIATA ITALIANA] [-Ag999 0/00]Blank with Custom Production Engraving [PERMIO] [DIRECTA-1988] [MASCAGNI Custom Logo]100 gram MP example produced in 1988 by Johnson Matthey, London, for Metalli Preziosi S.p.A. Some examples originally issued in presentation case, pictured below.

IMG_7585
Serial Absent<10
Screen Shot 2015-07-15 at 9.28.31 AM100g[GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [-MILANO-] [JOHNSON MATTHEY & CO. LTD +LONDON+] [CONSOCIATA ITALIANA] [-Ag999 0/00][MP Diamond Logo] [100 GRAMMI] [FINE SILVER] [999,0] [MADE IN ITALY]100 gram MP example produced by Johnson Matthey, London, for Metalli Preziosi S.p.A.Serial Absent<200
Screen Shot 2017-01-24 at 5.42.30 PM100g[GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [-MILANO-] [JOHNSON MATTHEY & CO. LTD +LONDON+] [CONSOCIATA ITALIANA] [-Ag999 0/00][Custom Logo] [100 GRAMMI] [FINE SILVER] [999,0] [MADE IN ITALY]100 gram MP example produced by Johnson Matthey, London, for Metalli Preziosi S.p.A.  Unknown company logo on the reverse, any insight our collector community has is welcomed. Serial Absent<50
Screen Shot 2015-10-20 at 9.50.32 AM100g[GARANTITO] [DALLA] [METALLI PRIZIOSI S.p.A.] [PADERNO DUGNANO] [-MILANO-] [JOHNSON MATTHEY & CO. LTD +LONDON+] [CONSOCIATA ITALIANA] [-Ag999 0/00]Blank, without border and includes custom engraving.  This particular bar, pictured, was a 1984 custom production piece given as a prize for an Italian sporting event.100 gram MP example produced by Johnson Matthey, London, for Metalli Preziosi S.p.A.Serial Absent<50
100 G100g[JOHNSON MATTHEY BRUSSELS Oval Logo] [Ag 999 Inner Oval] [100]Cast Finish100 gram example produced by Johnson Matthey & Pauwels, Brussels.Serial Absent<500
IMG_44024oz[J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [2 OZ.] [999]Cast FinishExceedingly rare 4oz example produced by Johnson Matthey, Canada.  One known example.Serial Absent<50
SONY DSC4oz[JMC Rectangular Logo] [Maple Leaf Logo] [999+] [4OZ]Cast Finish
4oz example produced by Johnson Matthey, Canada. A collector set of 3oz, 4oz, 5oz, 7oz and 10oz ingots was offered in 1965 by Guardian Trust Company of Montreal, Canada, for $57.03 not including postage – documented at this LINK. The collector set was available in two sizes, which may be found at this LINK.
Serial Absent<5,000
4oz NO MPALE4oz[JMC Rectangular Logo] [999+] [4OZ]Cast Finish4oz example produced by Johnson Matthey, Canada. Considerably more rare variation of our example above. These ingots were also offered in a collector set which may be found at this LINK.Serial Absent<500
130g JM TSB Bank130g[JM Mining Tool Logo] [999+ Cast Finish130g example produced by Johnson Matthey, Australia, in commemoration of TSB reaching $100 MIL in deposits.  TSB is New Zealand’s oldest bank, dating back to the 1850’s.Serial Absent<100
Screen Shot 2017-03-20 at 2.54.23 PM½ LB[SINGLES] [D] [CLASS] [Las Vegas Gun Club Custom Logo] [½ LB] [999 SILVER][Maims Las Vegas Hallmark] [ 999+ [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]A very interesting ½ LB TROY  [186.62g] example produced from silver provided by Johnson Matthey, Limited, of Canada.  Maims Enterprises custom silver producer created this piece for the Las Vegas Gun Club as a Class D Singles shooter’s award.  The USPSA [United States Practical Shooting Association] defines a Class D Shooter as one of 39.9% or less accuracy.  The conversion weight on this example is 6oz, or 186.62g.  One known example.Serial Absent1
JMC 1949 OBVERSEJMC 1949 REVERSE203.1g[JOHNSON MATTHEY & Co Ltd LONDON Circular Logoe] [ELECTRO REFINED 999] [JMC] [1949 in Elongated Octagon]Machined Finish203.1 gram example produced in 1949 by Johnson Matthey, London.Serial Absent1
SONY DSC7oz[JMC Rectangular Logo] [Maple Leaf Logo] [999+] [7OZ]Cast Finish
7oz example produced by Johnson Matthey, Canada. A collector set of 3oz, 4oz, 5oz, 7oz and 10oz ingots was offered in 1965 by Guardian Trust Company of Montreal, Canada, for $57.03 not including postage – documented at this LINK. The collector set was available in two sizes, which may be found at this LINK.
Serial Absent<5,000
7oz NO MAPLE7oz[JMC Rectangular Logo] [999+] [7OZ]Cast Finish7oz example produced by Johnson Matthey, Canada. Considerably more rare variation of our example above. These ingots were also offered in a collector set which may be found at this LINK.Serial Absent<500
JM LONDON 250GRAMME250g[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [Serial Number] [250GRAMME]Cast Finish250 gram example produced by Johnson Matthey, London. Originally issued in a collector box, pictured below.
SONY DSC
J 40060<100
unnamed-1 unnamed250g[totip] [CONCORSO N.1] Schedina e colonna vincente del 30 Maggio 1948] [- Ag999 0/00][TOTIP] [SCOMMESSA PLURIMA SULLE CORSE DEI CAVALLI] [Custom Charts and Graphics] [INDICARE OGNI CON | OPPURE X OPPURE 2]250 gram MP example produced by Johnson Matthey, London, for Metalli Preziosi S.p.A.  This example was produced to commemorate horse racing and betting.
unnamed-2 unnamed-4 unnamed-3
Serial Absent<50
Screen Shot 2016-05-17 at 8.42.06 AM250g[GARANTITO] [DALLA] [Metalli Preziosi spa] [PADERNO DUGNANO] [-MILANO-] [JOHNSON MATTHEY & CO.LTD LONDON Oval Logo] [CONSOCIATA ITALIANA Inner Logo] [- Ag999 0/00]Blank, with a border.  This particular example was engraved in 1990.250 gram MP example produced by Johnson Matthey, London, for Metalli Preziosi S.p.A.Serial Absent<200
Screen Shot 2015-10-20 at 9.57.31 AM250g[GARANTITO] [DALLA] [Metalli Preziosi S.p.A.] [PADERNO DUGNANO] [-MILANO-] [JOHNSON MATTHEY & CO.LTD LONDON Oval Logo] [CONSOCIATA ITALIANA Inner Logo] [- Ag999 0/00][MP Diamond Logo] [250 GRAMMI] [FINE SILVER] [999.0] [MADE IN ITALY]250 gram MP example produced by Johnson Matthey, London, for Metalli Preziosi S.p.A.Serial Absent<200
JMC LONDON 14.45g14.15oz
14.20oz
14.30oz
14.35oz
14.40oz
14.45oz
14.50oz

~1 LB
[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [JMC] [Serial Number] [14•45 OZS] [FINE SILVER] [JOHNSON MATTHEY ASSAY OFFICE with Crossed Hammers Logo]BlankApproximate 1 Avoirdupois Pound example produced in mid 1960’s by Johnson Matthey, London. Observed in various weight variations. Some bars were originally issued in wooden presentation box, pictured below.
14.45oz JM London Presentation Box 1966
75958
76038
76017
76560
76640
79566
80152
82211
<5,000
14.45JM London Variety 2~1 LB[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [JMC] [Serial Number] [JOHNSON MATTHEY ASSAY OFFICE with Crossed Hammers Logo] [FINE SILVER]BlankApproximate 1 Avoirdupois Pound example produced in mid 1960’s by Johnson Matthey, London. Not marked for weight.49747 A<100
14.45oz 1969 MAYFAIR COIN London~1 LB[JOHNSON MATTHEY LONDON Oval Logo] [9990 Inner Oval] [JMC] [Serial Number] [MAYFAIR COIN C. LONDON Custom Logo] [FINE SILVER]BlankApproximate 1 Avoirdupois Pound example produced in 1969 by Johnson Matthey, London, for Mayfair Coin Company. Originally issued in wooden presentation box, pictured below.
14.45oz 1969 MAYFAIR COIN London Box 2
14.45oz 1969 MAYFAIR COIN London Box 1
49765 A<100
JMC 50.068oz IRELAND50oz[JMC Logo] [Northgate Exploration Custom Logo] [NORTHGATE EXPLORATION LTD.] [TYNAGH MINE] [IRELAND] [999+] [50•068]Cast Finish50oz example produced by Johnson Matthey for Northgate Exploration, Ltc. Although technically an odd-sized example, this bar is also listed on our 50oz Definitive Page.
Serial Absent<500
2Kg Matthey Garret Sydney  Refined  92•000 kg[FINE SILVER] [99•9% MIN.] [JOHNSON MATTHEY LTD AUSTRALIA Oval Logo] [REFINED BY Inner Oval] [2.000 kg]Cast Finish2.000 kg example produced by Johnson Matthey, Australia. Early production smaller weight class designation font.
Serial Absent<1,000
JM_1999KgObv1.999kg[FINE SILVER] [99•9% MIN.] [JOHNSON MATTHEY LTD AUSTRALIA Oval Logo] [REFINED BY Inner Oval] [1.999 Kg]Cast Finish1.999 kg example produced by Johnson Matthey, Australia. Produced in approximate 2 kg weight class.
Serial Absent<2,000
JM_1997KgObv1•997kg[FINE SILVER] [99•9% MIN.] [JOHNSON MATTHEY Oval Logo] [1.997 kg]Cast Finish1.997 kg example produced by Johnson Matthey, Australia. Produced in approximate 2 kg weight class.
Serial Absent<3,000
JM 2.002kg 9474 WH
2•002kg
[W&M Flag Logo] [Diamond JM Logo with Crossed Hammers] [2•002kg]  [Serial Number] [999+]Cast Finish501kg example produced by Johnson Matthey, Australia. Interestingly, the W&H flag represents Walker & Hall of Sheffield, England, pictured below.
44-09
9474
9477
<250
image1 copy5kg[JOHNSON MATHEY Oval Logo] [5 KG] [999+SILVER]Cast Finish5 kg example produced by Johnson Matthey, Australia.Serial Absent<1,000
unnamedJM_Canada_501Oz_K001209500oz[JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [501 00 oz] [Serial Number] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [999+] Cast Finish501oz example produced by Johnson Matthey, Canada.K000706
K001209
<1,500
JM_1000Oz_Poured_2006_157131000oz[Serial Number] [Year of Production] [JOHNSON MATTHEY Above Diamond Logo] [Diamond JM Logo] [Mining Tool Logo] [Weight Designation to 1/100 oz] [999]Cast Finish
2006 and 2007 London Good Delivery bars produced in approximate 1000oz weight class. Serial number assignment is not as standardized as other weight class, most likely to obfuscate the number produced. Examples of weight class include 915.30oz, 959.30oz and 1021.50oz.
2006-15713 2007-18424<20,000