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<p>[QUOTE=&quot;jody526, post: 32435, member: 578&quot;]I suppose it could be the result of some impurities, left on the coin, when it was issued from the Mint.</p><p><br /></p><p>Copper is very reactive, and coins can become spotted even if kept in semi-airtight holders at controlled temperatures.</p><p><br /></p><p>(just a guess)[/QUOTE]</p><p><br /></p>

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