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<p>[QUOTE=&quot;GDJMSP, post: 3689652, member: 112&quot;]Maybe, but as mentioned it could be leftover traces from almost anything greenish colored that came into contact with the coin at some point. My personal guess is that it&#039;s a tiny bit of verdigris - that&#039;s what copper turns into when it corrodes. And the only thing necessary for copper to corrode is air. And since the coin is 56% copper .........</p><p><br /></p><p>Some folks don&#039;t realize it but verdigris isn&#039;t only found on 1 cent coins or other copper coins. It&#039;s also commonly found on nickels, silver, and even gold coins.[/QUOTE]</p><p><br /></p>

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