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Johnson Matthey Collectors
Prototype
10 oz Gold prototype
“JM LTD” on the oval stamp.
JM-P-1
10 oz Gold prototype
Similar to sample above except it has “JM&M LTD” on the oval stamp. Photos by TL
JM-P-4
1st Generation Blank Back
Photos by GG.
JM-P-3
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LONDON SAMPLE bar marked DUMMY
The sample marked 10 grams weighs 4.81 grams. and the sample bar marked 20 grams though weighs 9.32 grams. The bar is gold plated and both appears gold / tests as gold on an XRF machine. The bar is marked ‘DUMMY’ on the reverse of the bar to ensure no one would purchase / trade it as fine gold. Photos by coinwatchco.
JM-P-3
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