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Johnson Matthey Silver Bars

This page has all the information we could come up with about Johnson Matthey silver bars. It lists the varieties we have discovered so far with pictures, and where possible some information about serial numbers and mintages. Yeah, you found it here first!




ImageNameObverseReverseInfoSample Serial NumbersEstimated Mintage
1-Gram (g) Johnson Matthey Silver Bar, Variety B, Obverse1 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, E948710,000 (low confidence)
5-Gram (g) Johnson Matthey Silver Bar, Variety A, Obverse5-Gram (g) Johnson Matthey Silver Bar, Variety A, Reverse5 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, 184448~100,000 to ~200,000
5-Gram (g) Johnson Matthey Silver Bar, Variety B, Obverse5-Gram (g) Johnson Matthey Silver Bar, Variety B, Reverse5 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, 633297Unknown
5-Gram (g) Johnson Matthey Silver Bar, Shipwreck, Obverse5-Gram (g) Johnson Matthey Silver Bar, Shipwreck, Reverse5 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]		BlankApparently, minted from silver from a specific shipwreck, and limited to 20,000 pieces (per this YouTube video).00118520,000
5-Gram (g) Johnson Matthey Silver Bar, Koalagram, Obverse5-Gram (g) Johnson Matthey Silver Bar, Koalagram, Reverse5 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).NoneNot enough data.
10-Gram (g) Johnson Matthey Silver Bar, Variety A, Obverse10 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, 013706~50,000 (low confidence)
10-Gram (g) Johnson Matthey Silver Bar, Variety B, Obverse10-Gram (g) Johnson Matthey Silver Bar, Variety B, Reverse10 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, 020885~50,000 (low confidence)
10-Gram (g) Johnson Matthey Silver Bar, JAMC, Obverse10-Gram (g) Johnson Matthey Silver Bar, JAMC, Reverse10 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.NoneNot enough data.
10-Gram (g) Johnson Matthey Silver Bar, NERCO, Obverse10-Gram (g) Johnson Matthey Silver Bar, NERCO, Reverse10 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.051202Not enough data.
1/2-Ounce (half oz) Johnson Matthey Silver Bar, Variety B, Obverse1/2-Ounce (half oz) Johnson Matthey Silver Bar, Variety B, Reverse1/2 (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 visibleNo info.010976, 018865Not enough data.
1-Ounce (oz) Johnson Matthey Silver Bar, Canada, Obverse1 Ounce, Canada1 OZ.TR. 999
FINE SILVER
JOHNSON MATTHEY & MALLORY LIMITED
ASSAYERS AND REFINERS
CANADA [Serial #]		UnknownNo info.009256Not enough data. Low mintage.
1-Ounce (oz) Johnson Matthey Silver Bar, Italy, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Italy, Reverse1 Ounce, ItalyGARANTITO
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/an/a
1-Ounce (oz) Johnson Matthey Silver Bar, MTB, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, MTB, Reverse1 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<10,000 (low confidence)
1-Ounce (oz) Johnson Matthey Silver Bar, Centerre, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Centerre, Reverse1 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-24.01158Not enough data.
1-Ounce (oz) Johnson Matthey Silver Bar, Republic Bank, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Republic Bank, Reverse1 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<10,000
1-Ounce (oz) Johnson Matthey Silver Bar, Republic National Bank, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Republic National Bank, Reverse1 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, Reverse1 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 #]		BlankNo info.001217, 151135, 168854 ???
1-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Reverse1 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-Ounce (oz) Johnson Matthey Silver Bar, TD Bank, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, TD Bank, Reverse1 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???
1-Ounce (oz) Johnson Matthey Silver Bar, Apollo, Obverse1-Ounce (oz) Johnson Matthey Silver Bar, Apollo, Reverse1 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???
2-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Obverse2 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 #]		UnknownVery rare.008233???
100-Gram (g) Johnson Matthey Silver Bar, Canada, Obverse100 Gram, Canada100 GRAMS     999
FINE SILVER
JOHNSON MATTHEY & MALLORY LIMITED
ASSAYERS AND REFINERS
CANADA [Serial #]		BlankNo info.000297, 000335, 001228???
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.		BlankSeveral sold for about 2x spot.n/an/a
4-Ounce (oz) Johnson Matthey Silver Bar, Old Style, Obverse4 Ounce, Old Style[Rectangle with 'JMC' on left, leaf on right]
999+ 4 OZ.		UnknownOne sold for about 2x spot.n/an/a
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.		BlankNo info.n/an/a
5-Ounce (oz) Johnson Matthey Silver Bar, Variety A, Obverse5 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 #]		UnknownNo info.022694n/a
5-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Obverse5-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Reverse5 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, 074966n/a
7-Ounce (oz) Johnson Matthey Silver Bar, Old Style, Obverse7 Ounce, Old Style[Rectangle with 'JMC']
[Leaf]
999+    7OZ		UnknownNo info.n/an/a
10-Ounce (oz) Johnson Matthey Silver Bar, 1960s, Obverse10 Ounce, 1960s['J' and 'M' joined together]
.999+ FINE SILVER 10 TROY OUNCES		Unknown.This one was purchased in the 1960s.n/an/a
10-Ounce (oz) Johnson Matthey Silver Bar, Old Style, Obverse10-Ounce (oz) Johnson Matthey Silver Bar, Old Style, Reverse10 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/an/a
10-Ounce (oz) Johnson Matthey Silver Bar, Variety A, Obverse10-Ounce (oz) Johnson Matthey Silver Bar, Variety A, Reverse10 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 #]		BlankNo info.023437, 038046, 077297, 099498???
10-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Obverse10-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Reverse10 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 differently090991, 163408, 210298, 239841, 297300, 344351, 399093, 418915, 500080, 546599, 571395, 668016, R15739, R23826, R26659???
20-Ounce (oz) Johnson Matthey Silver Bar, Poured, TD Bank, Obverse20 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]		UnknownNo info.F008196, F008534???
20-Ounce (oz) Johnson Matthey Silver Bar, Poured, Serial Number, Obverse20 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]		UnknownNo info.F003752, F004218, F005269???
20-Ounce (oz) Johnson Matthey Silver Bar, Poured, No Serial Number, Obverse20 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		UnknownNo info.n/an/a
25-Ounce (oz) Johnson Matthey Silver Bar, Poured, Obverse25 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]		UnknownThe 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.n/a20017E
1-Kilogram (kg, kilo) Johnson Matthey Silver Bar, No Company Name, Poured, Obverse1 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]		UnknownNo info.12528D???
1-Kilogram (kg, kilo) Johnson Matthey Silver Bar, Poured, Obverse1 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]		UnknownNo info.D018291, D019103, D021798???
1-Kilogram (kg, kilo) Johnson Matthey Silver Bar, Poured, London, Obverse1 Kilogram, London [2 ovals, outside oval with 'JOHNSON MATTHEY - LONDON', inside oval with '9990']
1 KILO
SILVER
[Serial #]		UnknownThese 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???
1-Kilogram (kg, kilo) Johnson Matthey & Pauwels Silver Bar, Poured, Obverse1 Kilogram, Pauwels[2 ovals, outside oval with 'JOHNSON MATTHEY & PAUWELS', inside oval with 'BRUXELLES BRUSSEL']
999
1000.		UnknownNo info.n/an/a
50-Ounce (oz) Johnson Matthey Silver Bar, Poured, No Serial Number, Obverse50 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+		UnknownNo info.n/an/a
50-Ounce (oz) Johnson Matthey Silver Bar, Poured, Serial Number, Obverse50 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]		UnknownBar C028750 had a COA from JM dated 26 May 1982.C021866, C027540, C028750, C040130, C045169???
100-Ounce (oz) Johnson Matthey Silver Bar, Poured, Obverse100 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]		BlankNo info.004810, 006779, 009883, 014181, A1469 , A033604, A093759, A103239, A123043, A138912, A146878, A172480, A220895, A259168, A332530, A357988, A396248, A439696???
100-Ounce (oz) Johnson Matthey Silver Bar, Poured, No Serial Number, Obverse100 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]		BlankIt 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/an/a
100-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Obverse100-Ounce (oz) Johnson Matthey Silver Bar, Variety B, Reverse100 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???
1000-Ounce (oz) Johnson Matthey Silver Bar, Standard, Obverse1000 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]		BlankThese bars are 'London Good Delivery' bars. The serial numbering for JM 1000 ounce bars is not as standardized as other sizes (most likely to obsfuscate the amount they make).2006-15713, 2007-18424???
1000-Ounce (oz) Johnson Matthey Silver Bar, 2008 Version, Obverse1000 Ounce, 2008 Version[J-M-I logo on left, '999' on right]
[Serial # on left, Ounces to 1/100 Ounce on right]		BlankThese bars are 'London Good Delivery' bars. The serial numbering for JM 1000 ounce bars is not as standardized as other sizes (most likely to obsfuscate the amount they make).2008-1468???

All the JM struck ingots from 5g through 100oz were made in Brampton, Ontario, Canada in a state of the art facility (which is now closed). Thanks to Harris & Libbey Refining for the information!



Do you know of any varieties not listed here? Please be sure to let us know!
If you are the owner of any of the bars here, and would like the picture and/or serial number removed (or credit for the picture), please let us know as well.


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