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AG | 5oz


ALL ENGELHARD is pleased to welcome visitors to our Johnson Matthey 5oz 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-5-oz-15oz[Diamond JM Logo with Crossed Hammers] [5 OZ.] [999]Cast FinishExceedingly rare 5oz example produced by Johnson Matthey, United States.  Note the lack of [+] on purity designation.Serial Absent<25
Screen Shot 2019-01-02 at 11.08.21 AM5oz[Diamond JM Logo with Crossed Hammers] [5 OZ.] [999+]Cast Finsih5oz example produced by Johnson Matthey, United States.  This example has a considerably larger surface area than other JM 5oz ingots, measuring 31.73mm x 59.61mm x 8.90mm.  Our appreciation to Dan S. for this discovery!Serial Absent<200
Screen Shot 2019-01-02 at 11.08.21 AM co2py 25oz[Diamond JM Logo with Crossed Hammers] [5 OZ.]Cast FinishExceedingly rare 5oz example produced by Johnson Matthey, United States.  Similar to our above example, though lacks a purity designation.   This example measures 31.57mm x 59.57mm x 8.37mm. .Our appreciation to Dan S. for this discovery!Serial Absent<5
5oz JM5oz[Diamond JM Logo with Crossed Hammers] [5 OZ.] [999+]Cast Finish5oz example produced by Johnson Matthey, United States.  This example is very chunky and is the only ingot that demonstrates the larger diamond hallmark within this weight class.
Serial Absent<100
unnamed5oz[Diamond JM Logo with Crossed Hammers] [5 OZ.] [999+]Cast Finish5oz example produced by Johnson Matthey, United States.  Note this ingot demonstrates a shorter and more round ‘o’ in the ‘oz.’ weight class stamping.Serial Absent<500
JM rare bar5oz[Diamond JM Logo with Crossed Hammers] [5 OZ.] [999+]Cast Finish5oz example produced by Johnson Matthey, United States.  Similar to our above example, though this ingot demonstrates a taller, skinnier ‘oz’ weight class stamping.Serial Absent<200
image1 copy 25oz[Diamond JM Logo with Crossed Hammers] [5 OZ.] [999+]Cast Finish5oz example produced by Johnson Matthey, United States.  Similar to our above example, though this ingot demonstrates wider spacing on the ‘999+’ purity stamping.  This ingot measures 25.60mm x 47.80mm x 13.60mm.Serial Absent<100
Image-1 copy 25oz[Diamond JM Logo with Crossed Hammers] [5 OZ.] [999+]Cast Finish5oz example produced by Johnson Matthey, United States.  This ingot is similar to our above example., though demonstrates less spacing between the ‘999+’ purity stamping.  This ingot appears to be of the same casting mould as our example directly above and measures 25.60mm x 47.80mm x 13.60mm.Serial Mintage<200
Image copy5oz[Diamond JM Logo with Crossed Hammers] [5 OZ.] [999+]Cast Finish5oz example produced by Johnson Matthey, United States. The bottom of this casting mould is of slightly larger shape than the two examples we have listed directly above.  This ingot is notably more wide and flat than other ingots in this weight class, measuring 27.60mm x 47.80mm x 12.70mm.Serial Absent<100
IMG_09685oz[Diamond JM Logo with Crossed Hammers] [5 OZ.] [999+]Cast Finish5oz example produced by Johnson Matthey, United States.  This ingot is thicker and demonstrates a smaller obverse surface area than most 5oz examples, as shown in the photos below.
IMG_0964 54334269572__7C6E05F8-B04F-48F1-BF6A-4042F5433235		Serial Absent<50
image0-165oz[Diamond JM Logo with Crossed Hammers] [5 OZ.]  [J M  LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval]  [999+]Cast Finish5oz example produced by Johnson Matthey, United States. Serial Absent<50
image5oz[J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [5 oz.] [999]
Cast Finish
5oz example produced by Johnson Matthey & Mallory, Canada.Serial Absent<50
s-l1600-15oz[J M & M LTD. ASSAY OFFICE Oval Logo] [CANADA Inner Oval] [5 oz.] [999+]Cast Finish5oz example produced by Johnson Matthey & Mallory, Canada.  Similar to our above example in that it demonstrates the smaller oval hallmark, though includes different purity font with a ‘+’ stamp on purity designation.Serial Absent<25
image5oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [5 oz.] [999]Cast Finish5oz example produced by Johnson Matthey & Mallory, Canada.  One example sold for $1,151.00 via eBay auction on September 16, 2020.Serial Absent<25
SONY DSC5oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [5 oz.] [999+]
Cast Finish5oz example produced by Johnson Matthey & Mallory, Canada.Serial Absent<25
5oz JM Mallory Large Hallmark5oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [999+] [5 oz.]
Cast Finish5oz example produced by Johnson Matthey & Mallory, Canada. Similar to our example above though with variation of weight and purity placement.Serial Absent<25
FullSizeRender5oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [999+] [5 oz.]Cast Finish5oz example produced by Johnson Matthey & Mallory, Canada. Similar to our examples above though with variation of weight and purity placement.Serial Absent<25
JMM 5oz Maple5oz[JOHNSON MATTHEY & MALLORY Oval Logo] [CANADA Inner Oval] [Maple Leaf Logo] [999+] [5 oz.]Cast Finish5oz example produced by Johnson Matthey & Mallory, Canada. Similar to our examples above though with further variation of weight and purity placement, also includes Maple Leaf Logo.  One example sold for $1,377.00 via eBay auction on September 15, 2019.
Serial Absent<50
image15oz [JMC Rectangular Logo] [Maple Leaf Logo] [999+] [5OZ]Cast Finish5oz example produced by Johnson Matthey, Canada. This is the earliest example of its variety, recognizable by the shorter ‘JMC’ hallmark rectangle and the larger ‘OZ’ stamping of different font than the later series.m. Note the below photo depicting an apparent hand applied individual stamp set for the ‘oz’ weight class designation.
Screen Shot 2020-10-12 at 8.55.08 AM image2		Serial Absent<50
IMG_03915oz [JMC Rectangular Logo] [Maple Leaf Logo] [999+] [5OZ]Cast Finish5oz example produced by Johnson Matthey, Canada.  Similar to our above example, though demonstrates variation of ‘JMC’ hallmark and Maple Leaf stamp.Serial Absent<5

image		5oz[JMC Rectangular Logo] [999+] [5OZ]Cast Finish5oz example produced by Johnson Matthey, Canada. This example lacks the Maple Leaf stamping and is a variation of our example above.  These ingots were also offered in a collector set which may be found at this LINK.Serial Absent<250
5oz NO MAPLE 2
unnamed		5oz[JMC Rectangular Logo] [999+] [5OZ]Cast Finish5oz example produced by Johnson Matthey, Canada. This ingot is an error variation of our example above, note the 7/5 over-stamp on weight class designation.Serial Absent<25
image5oz[JMC Rectangular Logo] [Maple Leaf Logo] [999+] [5OZ]Cast Finish5oz 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<2,000
Screen Shot 2017-05-02 at 8.58.26 AM5oz[JMC Rectangular Logo] [Maple Leaf Logo] [5OZ] [999+]Cast Finish5oz example produced by Johnson Matthey, Canada.  Same as our above example, but has reverse placement of weight and purity stampings, as well as a double strike on the weight stamp.  Believed to be an error bar perhaps produced by a novice employee.Serial Absent<50
JM ALEXANDER'S $100 GIFT INGOT 5 OZ 0021 JM ALEXANDER'S $100 GIFT INGOT 5 OZ 00315oz[Custom Image of Woman and Building] [Alexander’s][$100] [ALEXANDER’S] [$100] [FINE SILVER] [5 OZ.TR.] [JM Crossed Hammers Logo] [MERCHANDISE CONVERTIBLE] [GIFT INGOT] [.999 FINE] [Serial Number]5oz example produced by Johnson Matthey for Alexander’s.800167<100
JM 5oz 0001525oz[JM Crossed Hammers Logo] [ASSAYERS & REFINERS] [FINE SILVER 999] [5 OUNCES TROY] [Serial Number]Blank
5oz example produced by Johnson Matthey, United States.000152
022694
033192
<15,000
Screen Shot 2018-02-26 at 11.47.53 AM5oz[JM Crossed Hammers Logo] [ASSAYERS & REFINERS] [FINE SILVER 999] [5 OUNCES TROY] [Serial Number][KIDD Custom Logo] [Kidd Creek Mines Ltd.] [ZINC PLANT] [1,000,000 ACCIDENTS FREE HOURS WORKED] [MAY 29, 1982]5oz example produced by Johnson Matthey, United States, for Kidd Creek Mines of Timmins, Ontario Canada.  Kidd Creek Mines is the world’s deepest base-metal mine below sea level.000223<100
5oz JM 25oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [5 OUNCES TROY] [Serial Number][JM Crossed Hammers Logo Repeated Seven Full Times]5oz example produced by Johnson Matthey, United States.043160
056543
060301
062085
074966
132524		<50,000
Screen Shot 2022-12-21 at 10.50.40 AM5oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [5 OUNCES TROY] [Serial Number][JM Crossed Hammers Logo Repeated Seven Full Times]5oz example produced by Johnson Matthey, United States.A068689<100
Screen Shot 2018-12-12 at 2.46.53 PM5oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [5 OUNCES TROY] [Serial Number][JM Crossed Hammers Logo Repeated Three Full Times]5oz example produced by Johnson Matthey, United States.  Similar to our above example, though lacks the A-prefix serial designation.074213<1,000
5oz JM Speedy Print5oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [5 OUNCES TROY] [Serial Number][SpeedyPrint 1962•1987 25th Anniversary Circular Logo] [Fine Silver 999] [5 OUNCES TROY]5oz example produced by Johnson Matthey, United States, for Speedy Print.001000
001023
001100		<100
Screen Shot 2019-03-08 at 4.36.50 PM5oz[Statue of Liberty]  [LIBERTY][Statue of Liberty Torch Logo]  [LIBERTY TRADE SILVER]  [.999+ FINE SILVER]  [FIVE TROY OUNCES]  [SERIAL NUMBER] [© 1982 MTB]  [UNITED STATES OF AMERICA] [Small [JM Crossed Hammers Logo]Specialty collector bar produced by Manfra, Tordella & Brookes, 1982 mintage.  0291<500
Screen Shot 2019-03-08 at 4.46.32 PM5oz[Statue of Liberty]  [LIBERTY][Golden State Sanwa Bank Logo] [Golden State Sanwa Bank] [.999+ FINE SILVER]  [FIVE TROY OUNCES]  [SERIAL NUMBER] [© 1982 MTB]  [UNITED STATES OF AMERICA] [Small [JM Crossed Hammers Logo]Specialty collector bar produced by Manfra, Tordella & Brookes produced for Golden State Sanwa Bank, 1982 mintage.  00078<100
5oz JM Escalante 19825oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [5 OUNCES TROY] [Serial Number][RANCHERS EXPLORATION Custom Logo] [ESCALANTE MINE] [1982]5oz example produced in 1982 by Johnson Matthey, United States, for Ranchers Exploration and Development Corporation of Albequerque, New Mexico.003337
003765
004065		<1,000
5oz JM Escalante No Date5oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [5 OUNCES TROY] [Serial Number][RANCHERS EXPLORATION Custom Logo] [ESCALANTE MINE]
5oz 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.004587
004763		<500
JM 5oz TD Bank Early5oz[JM Crossed Hammers Logo] [ASSAYERS & REFINERS] [FINE SILVER 999] [5 OUNCES TROY] [Serial Number][TD BANK Logo Repeated Six Full Times]5oz example produced by Johnson Matthey, United States, for TD Bank.000062<500
5oz JM TD Bank5oz[JM Crossed Hammers Logo] [JOHNSON MATTHEY] [ASSAYERS & REFINERS] [FINE SILVER 999] [5 OUNCES TROY] [Serial Number][TD BANK Logo Repeated Six Full Times]5oz example produced by Johnson Matthey, United States, for TD Bank.
006577<1,000
5oz JM Scotiabank5oz[Scotiabank Company Logo] [Scotiabank] [FINE SILVER 999 in Rectangle] [5 OUNCES TROY][Serial Number] [JM Crossed Hammers Logo]5oz example produced by Johnson Matthey, United States, for Scotiabank.003536
004995		<500
5oz JM NY BANK5oz[Circular Logo FIVE OUNCES TROY FINE SILVER Circular Logo with 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]5oz example produced in 1985 by Johnson Matthey, United States, for Republic National Bank of New York.
004940<5,000

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