| J-163 (1854 Copper Two-Leaf LFE) The coin pictured above was subjected to SEM-EDX (non-invasive) testing and confirmed to be copper (J-163). The coin pictured below was subjected to SEM-EDX (non-invasive) testing and confirmed to be bronze (J-164). Another example of why SEM-EDX testing is necessary for affirmative attributions. |
J-163 (Copper)
Rick Kay Rare Coins/Patterncoins.com
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