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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.
IMAGE WEIGHT CLASS OBVERSE REVERSE COMMENTARY SAMPLE SERIAL NUMBERS ESTIMATED MINTAGE
100oz JM OLD 440537 100oz [JM Joined Logo]  [999+ FINE SILVER]  [SERIAL NO. 440537]  [100+TROY OUNCES] Cast Finish 100oz example produced by Johnson Matthey, United States.  Believed to have been produced in the 1960’s. 440537 <1,000
IMG_8649 100oz [SIMMONS REFCO METALS Custom Logo] [REFCO METALS] [999+] [100 OUNCES TROY] [A000596] [ASSAYERS] [Small SIMMONS REFCO METALS Custom Logo] [REFINERS] Cast Finish 100oz example produced by Johnson Matthey, United States, for Simmons Refco Metals. A000596 <200
IMG_8662 100oz [Diamond JM Logo with Crossed Hammers] [100+ OZ] [Serial Number] [999+] [JM L. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] Cast Finish 100oz example produced by Johnson Matthey, Canada. 12784 A 17520 A <5,000
JM 100oz 8 Ball 100oz [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 Finish 100oz example produced by Johnson Matthey, Canada. 3762 <5,000
100OZ JM BACHE 2 100oz [BACHE Logo] [100+ OZ] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] Cast Finish 100oz example produced by Johnson Matthey, Canada, for BACHE. Serial Absent <500
100OZ JM BACHE 1 100oz [BACHE Logo] [100+ OZ] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] Cast Finish 100oz 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 RIGHT 100oz [Diamond JM Logo with Crossed Hammers] [Serial Number Sideways on Right] [100+ OZ] [999+]  [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] Cast Finish 100oz example produced by Johnson Matthey, Canada. A030295 <3,000
Screen Shot 2017-03-20 at 11.31.57 AM 100oz [TD Bank Logo] [Serial Number Sideways on Right] [100+OZ] [999+]  [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] Cast Finish 1st 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 Bank 100oz [TD Bank Logo] [Serial Number Sideways on Left] [100 OZ] [999+]  [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] Cast Finish 2nd series 100oz example produced by Johnson Matthey, Canada, for TD Bank. A227909 <500
JM 100oz SNB 100oz [Swiss Bank Corporation Logo] [Serial Number Sideways on Left] [100 OZ] [999+]  [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] Cast Finish 100oz example produced by Johnson Matthey, Canada, for Swiss Bank Corporation. A236624 <500
100-Ounce (oz) Johnson Matthey Silver Bar, Poured, No Serial Number, Obverse 100oz [Diamond JM Logo with Crossed Hammers] [100+ OZ] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] Cast Finish 100oz 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 Westway 100oz [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 Finish 100oz example produced by Johnson Matthey, Canada, for Westway. A031984 <500
JM 100oz Westway Serial Absent 100oz [Westway Counterstamp] [Small Diamond JM Logo with Crossed Hammers] [100+OZ] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [999+] Cast Finish 100oz example produced by Johnson Matthey, Canada, for Westway in serial absent variation. Serial Absent <100
JM 100oz JMM Serial Present 100oz [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 Finish 100oz example produced by Johnson Matthey & Mallory, Canada. 45164 <1,000
JM_UISB_100Oz_15924_Obv 100oz [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 Finish 100oz example produced by Johnson Matthey & Mallory, Canada. Serial Absent <500
Screen Shot 2017-03-20 at 11.48.48 AM 100oz [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [Maple Leaf Logo] [999+] [100+OZ] Cast Finish 100oz 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 1 100oz [JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [999+] [100+OZ] Cast Finish 100oz example produced by Johnson Matthey & Mallory, Canada.  Maple Leaf logo absent variation of our above example. Serial Absent <1,000
jm-100oz-silver-barunnamed 100oz [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 Finish 100oz 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
FullSizeRender 100oz [JOHNSON MATTHEY] [Diamond JM Logo with Crossed Hammers] [100+ OZ] [Serial Number] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [999+]  Cast Finish 100oz 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. 13438 B 13498 B 13502 B <100
160323_145626_m 100oz [Mocatta Metals Corporation Logo] [100+ OZ] [Serial Number] [999+] [JM LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] Cast Finish 100oz example produced by Johnson Matthey, Canada, for Mocatta Metals Corporation.  Larger presentation of Mocatta Metals Corporation logo shown below.
36592_ObvM24501 M26026 M28514<5,000Johnson-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<10,000dsc00826100oz[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<250JM_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<100,000Screen 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