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AG | 10oz


ALL
ENGELHARD
is pleased to welcome visitors to our Johnson Matthey 10oz 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
JM_10Oz_1960sObv10oz[JM Joined Logo] [.999+ FINE SILVER] [10 TROY OUNCES]Pressed Finish
10oz extruded example produced by Johnson Matthey, United States. One collector reported his example was purchased in the 1960’s.Serial Absent<50
JM_10Oz_OldStyleObv10oz[Diamond JM Logo with Crossed Hammers] [10 OZ] [999+]Cast Finish10oz  example produced by Johnson Matthey, United States.Serial Absent<1,000
10oz JM SMALL DIAMOND10oz[Diamond JM Logo with Crossed Hammers] [10 OZ] [999+]Cast Finish10oz  example produced by Johnson Matthey, United States. Produced using a different casting mould than our above example or, more probable, stampings were applied to reverse side of the bar which would have faced bottom of casting mould. Note smooth and square surface finish vs. poured example, above.
Serial Absent<1,000
unnamed-410oz[Diamond JM Logo with Crossed Hammers] [10 OZ.] [999+]Cast Finish10oz  example produced by Johnson Matthey, United States. Closer spacing on purity stamp than our example above.
Serial Absent<1,000
IMG_440610oz[Diamond JM Logo with Crossed Hammers] [10 OZ.] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish10oz  example produced by Johnson Matthey, includes the JM LTD. ASSAY OFFICE stamp.Serial Absent<250
jm-10-oz-710oz[Diamond JM Logo with Crossed Hammers] [10 OZ.]Cast Finish10oz  example produced by Johnson Matthey, very rare example without purity or Assay Office stamp.Serial Absent<50
IMG_439510oz[Diamond JM Logo with Crossed Hammers] [10 OZ.] [999+]Cast Finish10oz  example produced by Johnson Matthey, United States. Similar to our above example but variation in weight stamp font.Serial Absent<250
SONY DSC10oz[Diamond JM Logo with Crossed Hammers] [10 OZ] [999+]Cast Finish10oz  example produced by Johnson Matthey, United States. Larger Diamond JM Logo with greater spacing between purity stamping.Serial Absent<1,000
10oz JM DIAMOND 210oz[Diamond JM Logo with Crossed Hammers] [10 OZ] [999+]Cast Finish10oz  example produced by Johnson Matthey, United States. Larger Diamond JM Logo with less spacing between purity stamping.Serial Absent<1,000
unnamed10oz[J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [10 oz.] [999]Cast Finish10oz example produced by Johnson Matthey & Mallory, Canada.  Note the small font on ‘oz’ weight designation.Serial Absent<50
unnamed-110oz[J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [10 oz.] [999]Cast Finish10oz example produced by Johnson Matthey & Mallory, Canada.  Note the small font on ‘oz’ weight designation.  Similar to our above example but demonstrates wider spacing of purity stamp. Serial
Absent
<25
unnamed10oz[J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [10 OZ.] [999]Cast Finish10oz example produced by Johnson Matthey & Mallory, Canada.Serial Absent<100
jmm-10-oz-18-210oz[J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [10 OZ.] [JM & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval][999]Cast FinishVery rare 10oz example produced by Johnson Matthey & Mallory, Canada.Serial Absent<100
IMG_439410oz[J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [10 OZ.] [999+]Cast Finish10oz example produced by Johnson Matthey & Mallory, Canada.Serial Absent<100
unnamed10oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [10 OZ.] [999+]Cast Finish10oz example produced by Johnson Matthey & Mallory, Canada.Serial Absent<100
Screen Shot 2017-01-24 at 5.06.19 PM10oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [10 OZ.] [999+]Cast Finish10oz example produced by Johnson Matthey & Mallory, Canada.  Similar to the example above but demonstrates purity and weight stamp placement variation.Serial Absent<50
unnamed10oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [999+] [10 OZ.]Cast Finish10oz example produced by Johnson Matthey & Mallory, Canada.  Similar to the example above but demonstrates purity and weight stamp placement variation.Serial Absent<50
IMG_309010oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [Maple Leaf Logo] [999+] [10 OZ.]Cast Finish10oz example produced by Johnson Matthey & Mallory, Canada. Similar to our example above though with variation of weight and purity placement.Serial Absent<25
Screen Shot 2017-01-24 at 11.17.19 AM10oz[BACHE Custom Hallmark] [10 OZ.] [9999] [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval][SAMPLE]10oz example produced by Johnson Matthey & Mallory, Canada. This sample prototype ingot actually weighs 4.30oz and is believed to be produced out of a base metal.  One known example.Serial Absent1
unnamed10oz[JMC Rectangular Logo] [999+] [10oz.TR]Cast Finish10oz example produced by Johnson Matthey, Canada.Serial Absent<250
SILVER BAR JMC10oz[JMC Rectangular Logo] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [Maple Leaf] [999+] [10oz.TR]Cast Finish10oz example produced by Johnson Matthey, Canada.
Serial Absent<100
SONY DSC10oz[JMC Rectangular Logo] [Maple Leaf Logo] [999+] [10 OZ]Cast Finish10oz 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
10oz NO MPALE10oz[JMC Rectangular Logo] [Maple Leaf Logo] [999+] [10 OZ]Cast Finish10oz 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<250
unnamed-110oz[JOHNSON MATTHEY LONDON Oval Logo] [REFINERS MELTERS Inner Oval] [999] [10 OZS]Cast Finish10oz example produced by Johnson Matthey, London. Serial Absent<500
IMG_440010oz
[JOHNSON MATTHEY LONDON Oval Logo] [REFINERS MELTERS Inner Oval] [•9990] [10 OZS] [SILVER]
Cast Finish10oz example produced by Johnson Matthey, London.Serial Absent<250
JM_10Oz_VarietyA10oz[JM Crossed Hammers Logo] [ASSAYERS & REFINERS] [FINE SILVER 999] [10 OUNCES TROY] [Serial Number]Blank
10oz example produced by Johnson Matthey, United States.023437
038046
077297
099498
<50,000
Screen Shot 2015-08-24 at 10.05.59 AM10oz[JM Crossed Hammers Logo] [ASSAYERS & REFINERS] [FINE SILVER 999] [10 OUNCES TROY] [Serial Number][TD BANK Logo Repeated Six Full Times]10oz example produced by Johnson Matthey, United States, for TD Bank.
000389<500
Screen Shot 2016-02-22 at 11.02.05 AM10oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [10 OUNCES TROY] [Serial Number][TD BANK Logo Repeated Six Full Times]10oz example produced by Johnson Matthey, United States, for TD Bank.005680<250
JM_10Oz_VarietyB10oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [10 OUNCES TROY] [Serial Number][JM Crossed Hammers Logo Repeated Six Full Times]10oz example produced by Johnson Matthey, United States.090991
163408
210298
239841
297300
344351
399093
418915
500080
546599
571395
668016
996107
R15739
R23826
R26659
<750,000
10oz JM Blank Back New Variety10oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [10 OUNCES TROY] [Serial Number]Blank10oz example produced by Johnson Matthey, United States. Smooth reverse finish variation of our example, above.115744
119937
145863
<20,000
Screen Shot 2015-08-24 at 10.31.17 AM10oz[ROYAL BANK Custom Logo] [ROYAL BANK] [FINE SILVER 999] [10 OUNCES TROY][Serial Number] [ROYAL BANK Custom Logo Repeated Nine Times] [JM Crossed Hammers Logo]10oz example produced in 1989 by Johnson Matthey, United States, for Royal Bank.002237
002557
<250
JM 10oz EXCALANTE10oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [10 OUNCES TROY] [Serial Number][RANCHERS EXPLORATION Custom Logo] [ESCALANTE MINE] [1982]10oz example produced in 1982 by Johnson Matthey, United States, for RanchersExploration and Development Corporation of Albequerque, New Mexico.001470
002321
<1,000
unnamed10oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [10 OUNCES TROY] [Serial Number][RANCHERS EXPLORATION Custom Logo] [ESCALANTE MINE]10oz example produced in 1990 by Johnson Matthey, United States, for Ranchers Exploration and Development Corporation of Albequerque, New Mexico. This example does not include the ‘1982’ date as our example above.005231<1,000
JM 10oz SCOTIABANK10oz
[Scotiabank Company Logo] [Scotiabank] [FINE SILVER 999 in Rectangle] [10 OUNCES TROY]

[Serial Number] [JM Crossed Hammers Logo]
10oz example produced by Johnson Matthey, United States, for Scotiabank.002913
005729
<10,000
JM 10oz NYBANK10oz[Circular Logo TEN OUNCES TROY FINE SILVER Circular Logo] [Republic National Bank of New York Inner Logo] [REPUBLIC NATIONAL BANK OF NEW YORK][Serial Number] [RNB Custom Logo Repeated Eight Full Times] [JM Crossed Hammers Logo] [ASSAYERS REFINERS]10oz example produced by Johnson Matthey, United States, for Republic National Bank of New York.008603<3,000
JM MTB 10oz WIDE10oz[Statue of Liberty] [LIBERTY][MTB Oval Logo Repeated] [.999 FINE SILVER TEN TROY OUNCES] [SERIAL NUMBER] [UNITED STATES OF AMERICA] [JM Crossed Hammers Logo]1st series 10oz example produced by Johnson Matthey and Manfra, Tordella & Brookes, United States. Wide format bar as compared to the narrow format 2nd series variety, defined below. Lacks the “Copyright 1982″ designation (similar to the 1oz variety) and and serial numbers likely end at 7,500.  It is important to note that the Metal Arts Company [MA] produced the first 10oz bars for MTB, serial range 1 to 5,000.  Our appreciation to Barry H. for contributing his knowledge on these MTB bars.6741
6901
7108
7134
7484
<1,000
JM MTB 10oz NARROW10oz[Statue of Liberty] [LIBERTY][MTB Oval Logo Repeated] [.999 FINE SILVER TEN TROY OUNCES] [SERIAL NUMBER] [© 1982 MTB] [UNITED STATES OF AMERICA] [JM Crossed Hammers Logo]2nd series 10oz example produced by Johnson Matthey and Manfra, Tordella & Brookes, United States.  Narrow format bar as compared to the wider format 1st series variety, defined above.  Also includes the ‘Copyright 1982′ designation and appears serial ranges from 7,501 to 16,000. While it may appear this Series 2 bar is taller than Series 1, both bars are the same height. Our appreciation to Barry H. for contributing his knowledge on these MTB bars.
7590
7703
8708
9430
10554
11836
12343
12820
13520
14083

<8,500
10oz JM NEW10oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [10 OUNCES TROY] [Serial Number][JM Crossed Hammers Logo Repeated Six Full Times]10oz example first produced in 2012 by Johnson Matthey, United States. This is the most recent production 10oz bar and is currently in production.A005193Current
Production
Example
Statue of Liberty Statue of Liberty