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AG | 100oz


ALL
 ENGELHARD
 
is pleased to welcome visitors to our Johnson Matthey 100oz 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
100oz JM OLD 440537100oz[JM Joined Logo]  [999+ FINE SILVER]  [SERIAL NO. 440537]  [100+TROY OUNCES]Cast Finish100oz example produced by Johnson Matthey, United States.  Believed to have been produced in the 1960’s.440537<1,000
IMG_8649100oz[SIMMONS REFCO METALS Custom Logo] [REFCO METALS] [999+] [100 OUNCES TROY] [A000596] [ASSAYERS] [Small SIMMONS REFCO METALS Custom Logo] [REFINERS]Cast Finish100oz example produced by Johnson Matthey, United States, for Simmons Refco Metals.  One known example.A000596<200
IMG_8662100oz[Diamond JM Logo with Crossed Hammers] [100+ OZ] [Serial Number] [999+] [JM L. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish100oz example produced by Johnson Matthey, Canada.
12784 A
17520 A
<5,000
JM 100oz 8 Ball100oz[Diamond JM Logo with Crossed Hammers] [Number 8 Below Diamond Logo] [100+ OZ] [Serial Number Sideways on Left] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish100oz example produced by Johnson Matthey, Canada.3762<5,000
100OZ JM BACHE 2100oz[BACHE Logo] [100+ OZ] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish100oz example produced by Johnson Matthey, Canada, for BACHE.
Serial Absent<500
100OZ JM BACHE 1100oz[BACHE Logo] [100+ OZ] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish100oz example produced by Johnson Matthey, Canada, for BACHE.  Note the ‘+’ weigh class designation suffix.  Purity and oval logo variation of our example above.
Serial Absent<500
100OZ JM SERIAL RIGHT100oz[Diamond JM Logo with Crossed Hammers] [Serial Number Sideways on Right] [100+ OZ] [999+]  [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish100oz example produced by Johnson Matthey, Canada.
A030295<3,000
Screen Shot 2017-03-20 at 11.31.57 AM100oz[TD Bank Logo] [Serial Number Sideways on Right] [100+OZ] [999+]  [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish1st series 100oz example produced by Johnson Matthey, Canada, for TD Bank.  This ingot demonstrates a much narrower and deeper casting mould than the 2nd series, defined below.M000187
M000326
<250
JM 100oz TD Bank100oz[TD Bank Logo] [Serial Number Sideways on Left] [100 OZ] [999+]  [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish2nd series 100oz example produced by Johnson Matthey, Canada, for TD Bank. A227909<500
JM 100oz SNB100oz[Swiss Bank Corporation Logo] [Serial Number Sideways on Left] [100 OZ] [999+]  [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish100oz example produced by Johnson Matthey, Canada, for Swiss Bank Corporation. A236624<500
100-Ounce (oz) Johnson Matthey Silver Bar, Poured, No Serial Number, Obverse100oz[Diamond JM Logo with Crossed Hammers] [100+ OZ] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish100oz example produced by Johnson Matthey, Canada.  Note the ‘+’ weigh class designation suffix.  Pppears  some 100 oz bars in serial absent variation demonstrate ‘ 100+ OZ’ weight class designation slightly above middle of the bar, whereas bars with  serial numbers have ‘100+ OZ’ line near bottom, just above ‘999+’ line.Serial Absent<50,000
100oz JM Westway100oz[Westway Counterstamp] [Small Diamond JM Logo with Crossed Hammers] [Serial Number Sideways on Right] [100+OZ]  [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish100oz example produced by Johnson Matthey, Canada, for Westway.A031984<500
JM 100oz Westway Serial Absent100oz[Westway Counterstamp] [Small Diamond JM Logo with Crossed Hammers] [100+OZ] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [999+]Cast Finish100oz example produced by Johnson Matthey, Canada, for Westway in serial absent variation.
Serial Absent<100
JM 100oz JMM Serial Present100oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [Maple Leaf Logo] [J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [Serial Number] [999+] [100+OZ]Cast Finish100oz example produced by Johnson Matthey & Mallory, Canada.45164<1,000
JM_UISB_100Oz_15924_Obv100oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [Maple Leaf Logo] [J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [999+] [100+OZ]Cast Finish100oz example produced by Johnson Matthey & Mallory, Canada.
Serial Absent<500
Screen Shot 2017-03-20 at 11.48.48 AM100oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [Maple Leaf Logo] [999+] [100+OZ]Cast Finish100oz example produced by Johnson Matthey & Mallory, Canada.  This variation lacks the smaller JM&M oval stamp at the bottom of the obverse.Serial Absent<500
100OZ JMM 1100oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [999+] [100+OZ]Cast Finish100oz example produced by Johnson Matthey & Mallory, Canada.  Maple Leaf logo absent variation of our above example.
Serial Absent<1,000
jm-100oz-silver-barunnamed100oz[JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [Serial Number Sideways on Left] [100+ OZ]  [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish100oz example produced by Johnson Matthey, Canada. Some variations on serial number placement have been observed, as pictured.
004810
006779
009883
014181
A1469
A033604
A044079
A093759
A103239
A123043
A136577
A138912
A146878
A172480
A213970
A220895
A259168
A332530
A357988
A396248
A439696
<500,000
FullSizeRender100oz[JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [100+ OZ] [Serial Number] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [999+] Cast Finish100oz example produced by Johnson Matthey, Canada.  Interesting example, in that the weight designation placement is that of earlier pieces.  The serial number designation and placement are further anomalies.  Two known examples.13438 B
13498 B
13502 B
<100
160323_145626_m100oz[Mocatta Metals Corporation Logo] [100+ OZ] [Serial Number] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]
Cast Finish100oz example produced by Johnson Matthey, Canada, for Mocatta Metals Corporation.  Larger presentation of Mocatta Metals Corporation logo shown below.

36592_Obv
M24501
M26026
M28514
<5,000
Johnson-Matthey-Silver-Bar100oz[JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [100 OZ] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]Cast Finish100oz example produced by Johnson Matthey, Canada.  Note the lack of a ‘+’ purity designation suffix. Serial Absent<10,000
dsc00826100oz[JOHNSON MATTHEY LONDON Oval Logo] [REFINERS MELTERS Inner Oval] [100 OZS] [SILVER] [Serial Number]Cast Finish100oz example produced by Johnson Matthey, London.  JM70949A
JM72155A
JM72358A
<250
JM_100Oz_Stamped_R77354100oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [100 OUNCES TROY] [Serial Number][JM Crossed Hammers Logo Repeated Four Full Times]100oz example produced by Johnson Matthey, United States.  Issued in cardboard box, pictured below.  Many examples demonstrate machining swirls on both sides.  Produced in the late 1980s.

JM_100Oz_Stamped_R54182
R01041
R02315
R03698
R11157
R28947
R33797
R44684
R45267
R47357
R54182
R56249
R69011
R77354
R78446
R90710
R92593
R93337
R94088
R94449
<100,000
Screen Shot 2015-08-26 at 12.08.29 PM100oz [Statue of Liberty] [LIBERTY][JM Crossed Hammers Logo Repeated] [FINE SILVER 100 TROY OUNCES] [SERIAL NUMBER] [© 1982 MTB UNITED STATES OF AMERICA] 100oz example produced by Johnson Matthey, United States, for Manfra, Tordella & Brookes. Originally issued in cardboard protective box, pictured below.
$_57-1
2163
B2546
<3,000