Diamond JM Logo with Crossed Hammers
​Type 2 - Similar to sample above with the exception of the 999+ purity is located on the left side and JM oval logo stamped on the lower right. Photo credit to Wizard1 Currency & Bullion.
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Dimensions: Unknown
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Weight: kilo
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Purity: .999
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Metal Type: Silver
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Serial Number: N/A
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Obverse: Blank back
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Mintage: Unknown
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Catalog Number: JM-P-18
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Credit to: coinwatchco
Diamond JM Logo with Crossed Hammers
Serialized. Similar with the sample above but smaller diamond JM logo and weight stamp is "1 Kg".
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Dimensions: Unknown
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Weight: kilo
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Purity: .999
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Metal Type: Silver
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Serial Number: N/A
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Obverse: Blank back
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Mintage: Unknown
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Catalog Number: JM-P-18
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Credit to: coinwatchco
JOHNSON MATTHEY Diamond JM Logo with Crossed Hammers
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Dimensions: Unknown
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Weight: kilo
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Purity: .999
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Metal Type: Silver
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Serial Number: N/A
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Obverse: Blank back
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Mintage: Unknown
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Catalog Number: JM-P-26
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Credit to: N/A
JOHNSON MATTHEY & MALLORY Oval Logo no maple leaf
​Type 2 - similar with the sample above but missing "+" on the purity stamp. Photo by jmcanada.
​Type 3 - missing "+" marked as "9990"on the purity stamp Photo by coinwatchco.com.
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Dimensions: Unknown
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Weight: kilo
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Purity: .999
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Metal Type: Silver
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Serial Number: N/A
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Obverse: Blank back
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Mintage: Unknown
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Catalog Number: JM-MP-3
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Credit to: N/A
JOHNSON MATTHEY & MALLORY Oval Logo with maple leaf
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Dimensions: Unknown
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Weight: kilo
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Purity: .999
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Metal Type: Silver
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Serial Number: N/A
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Obverse: Blank back
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Mintage: Unknown
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Catalog Number: JM-MP-3
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Credit to: N/A
JOHNSON MATTHEY LONDON Large Logo
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Dimensions: Unknown
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Weight: kilo
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Purity: .999
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Metal Type: Silver
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Serial Number: N/A
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Obverse: Blank back
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Mintage: Unknown
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Catalog Number: JM-U-7
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Credit to: Silfr772
JOHNSON MATTHEY LONDON - Small Logo
​Similar with Type 1 sample above but demonstrating smaller logo with inner "REFINERS MELTERS".
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Dimensions: Unknown
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Weight: kilo
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Purity: .999
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Metal Type: Silver
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Serial Number: N/A
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Obverse: Blank back
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Mintage: Unknown
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Catalog Number: JM-U-8
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Credit to: Silfr772
JOHNSON MATTHEY LONDON - extruded Rood
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Dimensions: Unknown
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Weight: kilo
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Purity: .999
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Metal Type: Silver
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Serial Number: N/A
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Obverse: Blank back
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Mintage: Unknown
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Catalog Number: JM-U-9
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Credit to: Silfr772
BRUXELLES BRUSSEL
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Dimensions: Unknown
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Weight: kilo
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Purity: .999
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Metal Type: Silver
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Serial Number: N/A
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Obverse: Blank back
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Mintage: Unknown
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Catalog Number: JM-BEL-1
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Credit to: mooneymetals
JOHNSON MATTHEY, Australia
​Type 2 - Similar with the sample above, there is a decimal ‘.’ in between ‘1’ and ‘KG’ weight stamp. Photo by @wilz_vsng.
​Type 3 - No weight counterstamp. Hallmark is positioned at the reverse flat side of the bar. Photos by @wilz_vsng.
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Dimensions: Unknown
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Weight: kilo
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Purity: .999
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Metal Type: Silver
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Serial Number: N/A
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Obverse: Blank back
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Mintage: Unknown
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Catalog Number: JM-A-2
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Credit to: N/A