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JOHNSON MATTHEY LTD

JM1-1-copy 400

ALL ENGELHARD¬†is pleased to welcome visitors to our Johnson Matthey 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!

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Image Name Obverse Reverse Info Sample Serial Numbers Estimated Mintage
1-Gram (g) Johnson Matthey Silver Bar, Variety B, Obverse 1 Gram, Variety B [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 5 GRAMS [Rectangle with Serial #] JM Logo (Rectangle with JM on left and crossed hammers on right) repeated, about 5 fully visible. No info. E1609, E8914, E9487 <10,000
5-Gram (g) Johnson Matthey Silver Bar, Variety A, Obverse5-Gram (g) Johnson Matthey Silver Bar, Variety A, Reverse 5 Gram, Variety A [Rectangle logo, JM on left and crossed hammers on right] ASSAYERS REFINERS [Rectangle with ‘FINE’, ‘SILVER’ and ‘999’] 5 GRAMS [Rectangle with Serial #] Blank. No info. 027426, 056076, 065073, 114437, 125848, 165998, 184448 <200,000
5-Gram (g) Johnson Matthey Silver Bar, Variety B, Obverse5-Gram (g) Johnson Matthey Silver Bar, Variety B, Reverse 5 Gram, Variety B [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 5 GRAMS [Rectangle with Serial #] JM Logo (Rectangle with JM on left and crossed hammers on right) repeated, about 5 fully visible. Interestingly, most of the serial numbers we have found start around 500,000, whereas the Variety A appear to end at just under 200,000. It looks like JM skipped serial numbers, or overproduced and melted large quantities. 200xxx, 201xxx, 53xxx8, 572472, 586387, 633297 <650,000
5-Gram (g) Johnson Matthey Silver Bar, Shipwreck, Obverse5-Gram (g) Johnson Matthey Silver Bar, Shipwreck, Reverse 5 Gram, Shipwreck [Image of a ship] [Rectangle with ‘999’, ‘FINE’, and ‘SILVER’] 5 GRAMS [Rectangle with Serial #] [Rectangle logo, JM on left and crossed hammers on right] Blank Apparently, minted from silver from a specific shipwreck, and limited to 20,000 pieces (per this YouTube video). 001185 <2,500
5-Gram (g) Johnson Matthey Silver Bar, Koalagram, Obverse5-Gram (g) Johnson Matthey Silver Bar, Koalagram, Reverse 5 Gram, Koalagram [Rectangle with ‘Koalagram’] 5 gm FINE SILVER 999 [Rectangle logo, JM on left and crossed hammers on right] [Rectangle with Serial #] [An outline of a koala bear] Thicker than most JM bars (with shorter width/height). None <1,000
10-Gram (g) Johnson Matthey Silver Bar, Variety A, Obverse 10 Gram, Variety A [Rectangle logo, JM on left and crossed hammers on right] ASSAYERS REFINERS [Rectangle with ‘FINE’, ‘SILVER’ and ‘999’] 10 GRAMS [Rectangle with Serial #] Unknown; likely JM Logo (Rectangle with JM on left and crossed hammers on right) repeated, about 7 fully visible. No info. 004628, 013706 <20,000
10-Gram (g) Johnson Matthey Silver Bar, Variety B, Obverse10-Gram (g) Johnson Matthey Silver Bar, Variety B, Reverse 10 Gram, Variety B [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 10 GRAMS [Rectangle with Serial #] JM Logo (Rectangle with JM on left and crossed hammers on right) repeated, about 7 fully visible. No info. 019596, 020885 <25,000
10-Gram (g) Johnson Matthey Silver Bar, JAMC, Obverse10-Gram (g) Johnson Matthey Silver Bar, JAMC, Reverse 10 Gram, JAMC [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 10 GRAMS [Rectangle with Serial #] [JAMC Logo repeated, about 7 fully visible] No info. None <3,000
10-Gram (g) Johnson Matthey Silver Bar, NERCO, Obverse10-Gram (g) Johnson Matthey Silver Bar, NERCO, Reverse 10 Gram, NERCO [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 10 GRAMS [Rectangle with Serial #] [‘N’ Logo] NERCO NERCO MINERALS CO. No info. 051202 <3,000
1/2-Ounce (half oz) Johnson Matthey Silver Bar, Variety B, Obverse1/2-Ounce (half oz) Johnson Matthey Silver Bar, Variety B, Reverse 1/2 (half) Ounce, Variety B [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 1/2 OUNCE TROY [Rectangle with Serial #] JM Logo (Rectangle with JM on left and crossed hammers on right) repeated, about 7 fully visible No info. 010976, 018865 <20,000
aaa1-Ounce (oz) Johnson Matthey Silver Bar, Canada, Obverse 1 Ounce, Canada 1 OZ.TR. 999 FINE SILVER JOHNSON MATTHEY & MALLORY LIMITED ASSAYERS AND REFINERS CANADA [Serial #] Unknown No info. 009256 <3,000
1-Ounce (oz) Johnson Matthey Silver Bar, Italy, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Italy, Reverse 1 Ounce, Italy GARANTITO DALLA METALLI PRIZIOS Sp.A. PADERNO DUGNANO MILANO [JOHNSON MATTHEY & CO. LTD. – LONDON outside inner circle with CONSOCIATA ITALIANA] [Rectangle with ‘Ag999?/100′] [Diamond with ‘MP’] ONE OUNCE FINE SILVER 999.0 MADE IN ITALY No info. N/A <1,000
1-Ounce (oz) Johnson Matthey Silver Bar, MTB, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, MTB, Reverse 1 Ounce, MTB [Statue of Liberty with ‘LIBERTY’ in rectangle at bottom] [MTB 3-globe logo repeated in background] [Rectangle with:] .999 FINE SILVER ONE TROY OUNCE [Rectangle with Serial #] (C) 1982 MTB UNITED STATES OF AMERICA [Rectangle with JM on left and crossed hammers on right] Presumably made in 1982 for MTB (Manfra, Tordella & Brookes, Inc.). C2342, 69410, 79979 <20,000
1-Ounce (oz) Johnson Matthey Silver Bar, Centerre, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Centerre, Reverse 1 Ounce, Centerre [Statue of Liberty with ‘LIBERTY’ in rectangle at bottom] CENTERRE [Rectangle with rounded edges, containing:] .999 FINE SILVER ONE TROY OUNCE [Serial #] [unreadable line; perhaps (C)1984 ???] UNITED STATES OF AMERICA [Rectange with JM on left and crossed hammers on right] Presumably made around 1984 for Centerre (perhaps Centerre Bank?). Apparently came with an assay card. ID JLM-24. 01158 <3,000
1-Ounce (oz) Johnson Matthey Silver Bar, Republic Bank, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Republic Bank, Reverse 1 Ounce, Republic Bank [Statue of Liberty with ‘LIBERTY’ in rectangle at bottom] Republic Bank [Rectangle with:] .999 FINE SILVER ONE TROY OUNCE [Rectangle with Serial #] (C) 1982 MTB UNITED STATES OF AMERICA [Rectangle with JM on left and crossed hammers on right] Presumably made in 1982 for Republic Bank. Seen for sale at about 5x spot or $50+ over spot. 0513 <3,000
1-Ounce (oz) Johnson Matthey Silver Bar, Republic National Bank, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Republic National Bank, Reverse 1 Ounce, Republic National Bank [Circle with a shield logo surrounded by ‘ONE OUNCE TROY FINE SILVER 999′] REPUBLIC NATIONAL BANK OF NEW YORK [Serial # in Rectangle] [RNB Shield logo, repeated 8 times] [JM with 2 hammers logo on left, ASSAYERS and REFINERS on right] No info. 001501, 003280, 004701, 005998, 007294 <10,000
1-Ounce (oz) Johnson Matthey Silver Bar, Variety A, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Variety A, Reverse 1 Ounce, Variety A [Rectangle logo, JM on left and crossed hammers on right] ASSAYERS REFINERS [Rectangle with ‘FINE’, ‘SILVER’ and ‘999’] 1 OUNCE TROY [Rectangle with Serial #] Blank No info. 001217, 151135, 168854 <20,000
1-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Reverse 1 Ounce, Variety B [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 1 OUNCE TROY [Rectangle with Serial #] JM Logo (Rectangle with JM on left and crossed hammers on right) repeated, about 7 fully visible. The reverse of these bars are not always aligned exactly the same. It seems that they are very similar, yet not always identical. Also, it appears that there was a slight redesign on the obverse, making the lettering and lines slightly thicker (at somewhere between ~297,000 to ~639,000. It appears that when 999,999 was hit, an ‘R’ prefix was used with a 5-digit number (e.g. ‘R 01234′). 283784, 292061, 383289 , 470070, 600285, 749150, 862295, 920981, R 08149, R 10881 <1,000,000
1-Ounce (oz) Johnson Matthey Silver Bar, TD Bank, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, TD Bank, Reverse 1 Ounce, TD Bank [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 1 OUNCE TROY [Rectangle with Serial #] [‘TD BANK’ logo, repeated 6 times] No info. 017607 <20,000
1-Ounce (oz) Johnson Matthey Silver Bar, Apollo, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Apollo, Reverse 1 Ounce, Apollo [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 1 OUNCE TROY [Rectangle with Serial #] Apollo 1968 [Image of Apollo mission] JML-7. Apparently minted in 1986. Seen selling for $70 over spot price. 001105 <1,000
2-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Obverse 2 Ounce, Variety B [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 2 OUNCES TROY [Rectangle with Serial #] Unknown Very rare. 008233 <10,000
100-Gram (g) Johnson Matthey Silver Bar, Canada, Obverse 100 Gram, Canada 100 GRAMS 999 FINE SILVER JOHNSON MATTHEY & MALLORY LIMITED ASSAYERS AND REFINERS CANADA [Serial #] Blank No info. 000297, 000335, 001228 <2,000
3-Ounce (oz) Johnson Matthey Silver Bar, Old Style, Obverse 3-Ounce (oz) Johnson Matthey Silver Bar, Old Pour, Reverse 3 Ounce, Old Style [Rectangle with ‘JMC’ on left, leaf on right] 999+ 3 OZ. Blank Several sold for about 2x spot. N/A <3,000
4-Ounce (oz) Johnson Matthey Silver Bar, Old Style, Obverse 4 Ounce, Old Style [Rectangle with ‘JMC’ on left, leaf on right] 999+ 4 OZ. Unknown One sold for about 2x spot. N/A <3,000
5-Ounce (oz) Johnson Matthey Silver Bar, Old Style, Obverse 5-Ounce (oz) Johnson Matthey Silver Bar, Old Style, Reverse 5 Ounce, Old Style [Rectangle with ‘JMC’ on left, leaf on right] 999+ 5 OZ. Blank No info. N/A <3,000
5-Ounce (oz) Johnson Matthey Silver Bar, Variety A, Obverse 5 Ounce, Variety A [Rectangle logo, JM on left and crossed hammers on right] ASSAYERS REFINERS [Rectangle with ‘FINE’, ‘SILVER’ and ‘999’] 5 OUNCES TROY [Rectangle with Serial #] Unknown No info. 022694 <25,000
5-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Obverse5-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Reverse 5 Ounce, Variety B [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 5 OUNCES TROY [Rectangle with Serial #] JM Logo (Rectangle with JM on left and crossed hammers on right) repeated, about 7 fully visible. No info. 043160, 060301, 062085, 074966 <100,000
7-Ounce (oz) Johnson Matthey Silver Bar, Old Style, Obverse 7 Ounce, Old Style [Rectangle with ‘JMC’] [Leaf] 999+ 7OZ Unknown No info. N/A <3,000
10-Ounce (oz) Johnson Matthey Silver Bar, 1960s, Obverse 10 Ounce, 1960s [‘J’ and ‘M’ joined together] .999+ FINE SILVER 10 TROY OUNCES Unknown. This one was purchased in the 1960s. N/A <1,000
10-Ounce (oz) Johnson Matthey Silver Bar, Old Style, Obverse10-Ounce (oz) Johnson Matthey Silver Bar, Old Style, Reverse 10 Ounce, Old Style [Diamond Logo with large JM and small crossed hammers below] 10 OZ 999+ Blank. About 1 1/2″ wide by 2 3/8″ tall. N/A <3,000
10-Ounce (oz) Johnson Matthey Silver Bar, Variety A, Obverse10-Ounce (oz) Johnson Matthey Silver Bar, Variety A, Reverse 10 Ounce, Variety A [Rectangle logo, JM on left and crossed hammers on right] ASSAYERS REFINERS [Rectangle with ‘FINE’, ‘SILVER’ and ‘999’] 10 OUNCES TROY [Rectangle with Serial #] Blank No info. 023437, 038046, 077297, 099498 <10,000
10-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Obverse10-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Reverse 10 Ounce, Variety B [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 10 OUNCES TROY [Rectangle with Serial #] JM Logo (Rectangle with JM on left and crossed hammers on right) repeated, about 5 fully visible. The pattern on the reverse is sometimes centered slightly differently 090991, 163408, 210298, 239841, 297300, 344351, 399093, 418915, 500080, 546599, 571395, 668016, R15739, R23826, R26659 <750,000
20-Ounce (oz) Johnson Matthey Silver Bar, Poured, TD Bank, Obverse 20 Ounce, Poured, TD Bank [TD Bank Logo, ‘TD’ ‘BANK’] [Serial # on Left sideways, ’20 OZ’ in middle] 999+ [‘J M LTD. ASSAY OFFICE’ in outer oval around ‘CANADA'(?) in inner oval] Unknown No info. F008196, F008534 <1,000
20-Ounce (oz) Johnson Matthey Silver Bar, Poured, Serial Number, Obverse 20 Ounce, Poured, Serial Number [Diamond Logo with large JM and small crossed hammers below, ‘JOHNSON’ on outside top left, ‘MATTHEY’ on outside top right] [Serial # on Left sideways, ’20 OZ’ in middle] 999+ [‘J M LTD. ASSAY OFFICE’ in outer oval around ‘CANADA’ in inner oval] Unknown No info. F003752, F004218, F005269 <3,000
20-Ounce (oz) Johnson Matthey Silver Bar, Poured, No Serial Number, Obverse 20 Ounce, Poured, No Serial [‘JOHNSON MATTHEY & MALLORY’ in outer oval around ‘CANADA’ in inner oval] [Leaf] [‘J M & M LTD. ASSAY OFFICE’ in outer oval around ‘CANADA’ in inner oval] 999+ 20 OZ.TR Unknown No info. N/A <3,000
25-Ounce (oz) Johnson Matthey Silver Bar, Poured, Obverse 25 Ounce, Poured [Diamond Logo with large JM and small crossed hammers below] 25 OZ [Serial #] 999+ [‘J M LTD. ASSAY OFFICE’ in outer oval around ‘CANADA’ in inner oval] Unknown The sample we saw had a serial number ‘20017E’, the only bar we’ve seen from a major refiner with a letter at the end of the serial number. 20017E <3,000
1-Kilogram (kg, kilo) Johnson Matthey Silver Bar, No Company Name, Poured, Obverse 1 Kilogram, No Company Name, Poured [Diamond Logo with large JM and small crossed hammers below] 1 KILO [Serial #] 999+ [‘J M LTD. ASSAY OFFICE’ in outer oval around ‘CANADA’ in inner oval] Unknown No info. 12528D <3,000
1-Kilogram (kg, kilo) Johnson Matthey Silver Bar, Poured, Obverse 1 Kilogram, Poured [Diamond Logo with large JM and small crossed hammers below, ‘JOHNSON’ on outside top left, ‘MATTHEY’ on outside top right] [Serial # on Left sideways, ‘1 KILO’ in middle] 999+ [‘J M LTD. ASSAY OFFICE’ in outer oval around ‘CANADA’ in inner oval] Unknown No info. D018291, D019103, D021798 <10,000
1-Kilogram (kg, kilo) Johnson Matthey Silver Bar, Poured, London, Obverse 1 Kilogram, London [2 ovals, outside oval with ‘JOHNSON MATTHEY – LONDON’, inside oval with ‘9990’] 1 KILO SILVER [Serial #] Unknown These have an serial numbers. Apparently, they all start with ‘JM’ (for Johnson Matthey), and end in an letter (rather than starting with a number, as is typical). Perhaps these were made to specifications of an outside organization. JM66436A <3,000
1-Kilogram (kg, kilo) Johnson Matthey & Pauwels Silver Bar, Poured, Obverse 1 Kilogram, Pauwels [2 ovals, outside oval with ‘JOHNSON MATTHEY & PAUWELS’, inside oval with ‘BRUXELLES BRUSSEL’] 999 1000. Unknown No info. N/A <500
50-Ounce (oz) Johnson Matthey Silver Bar, Poured, No Serial Number, Obverse 50 Ounce, Poured, No Serial [Diamond Logo with large JM and small crossed hammers below] 25 OZ [‘J M LTD. ASSAY OFFICE’ in outer oval around ‘CANADA’ in inner oval] 999+ Unknown No info. N/A <25,000
50-Ounce (oz) Johnson Matthey Silver Bar, Poured, Serial Number, Obverse 50 Ounce, Poured, Serial Number [Diamond Logo with large JM and small crossed hammers below, ‘JOHNSON’ on outside top left, ‘MATTHEY’ on outside top right] [Serial # on Left sideways] [’50 OZ’ on right] 999+ [‘J M LTD. ASSAY OFFICE’ in outer oval around ‘CANADA’ in inner oval] Unknown Bar C028750 had a COA from JM dated 26 May 1982. C021866, C027540, C028750, C040130, C045169 <25,000
100-Ounce (oz) Johnson Matthey Silver Bar, Poured, Obverse 100 Ounce, Poured [Diamond Logo with large JM and small crossed hammers below, ‘JOHNSON’ on outside top left, ‘MATTHEY’ on outside top right] [Serial # on Left] 100 OZ 999+ [‘J M LTD. ASSAY OFFICE’ in outer oval around ‘CANADA’ in inner oval] Blank No info. 004810, 006779, 009883, 014181, A1469 , A033604, A093759, A103239, A123043, A136577, A138912, A146878, A172480, A220895, A259168, A332530, A357988, A396248, A439696 <500,000
100-Ounce (oz) Johnson Matthey Silver Bar, Poured, No Serial Number, Obverse 100 Ounce, Poured, No Serial Number [Diamond Logo with large JM and small crossed hammers below, ‘JOHNSON’ on outside top left, ‘MATTHEY’ on outside top right] 100 OZ 999+ [‘J M LTD. ASSAY OFFICE’ in outer oval around ‘CANADA’ in inner oval] Blank It appears that some of the 100 ounce bars with no serial number have the ‘100+ OZ’ line slightly above the middle of the bar, whereas the bars with the serial numbers always have the ‘100+ OZ’ line near the bottom, just above the ‘999+’ line. N/A <500,000
100-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Obverse100-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Reverse 100 Ounce, Variety B [Rectangle logo, JM on left and crossed hammers on right] JOHNSON MATTHEY ASSAYERS & REFINERS [Rectangle with ‘FINE SILVER’ and ‘999’] 100 OUNCES TROY [Rectangle with Serial #] JM Logo (Rectangle with JM on left and crossed hammers on right) repeated, about 7 fully visible. These came in a cardboard box, printed with the same design as the bar, including the serial number minus the leading ‘R’. It seems that many of these have visible swirls on both sides. These may have been made in the late 1980s. R01041, R03698, R11157, R28947, R33797, R45267, R47357, R54182, R56249, R69011, R77354, R78446, R90710, R92593, R93337, R94449 <100,000
1000-Ounce (oz) Johnson Matthey Silver Bar, Standard, Obverse 1000 Ounce, Standard [Serial # on left, Year on right with diamond JM Logo to right of year] [Ounces to 1/100 oz on left, ‘999’ on right] Blank These bars are ‘London Good Delivery’ bars. The serial numbering for JM 1000 ounce bars is not as standardized as other sizes (most likely to obfuscate the amount they make). 2006-15713, 2007-18424 <250,000
1000-Ounce (oz) Johnson Matthey Silver Bar, 2008 Version, Obverse 1000 Ounce, 2008 Version [J-M-I logo on left, ‘999’ on right] [Serial # on left, Ounces to 1/100 Ounce on right] Blank These bars are ‘London Good Delivery’ bars. The serial numbering for JM 1000 ounce bars is not as standardized as other sizes (most likely to obfuscate the amount they make). 2008-1468 <250,000
All Johnson Matthey bars and ingots from 5g through 100oz were produced in Brampton, Ontario, Canada in a state of the art facility (which is now closed). Thanks to Harris & Libbey Refining for the information!