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<p>[QUOTE=&quot;SeptimusT, post: 3033117, member: 91240&quot;]Well, someone who knows more about Chinese coinage should tell you if they think that’s BD or not. I don’t want to give you erroneous advice or lead you to damage your coin. But if it is, removing it with a toothpick or pin (extremely carefully with that later one) and soaking it in distilled water for a couple weeks, followed by quick drying with heat (blow dryer or something) usually works. Other than removing some green gunk, that process usually stops it and doesn’t affect the coin at all otherwise.[/QUOTE]</p><p><br /></p>

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