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<p>[QUOTE=&quot;GDJMSP, post: 1680940, member: 112&quot;]You can buy pure acetone at any hardware or home improvement store. And no, using acetone on a coin is not considered harsh cleaning. Acetone is used on coins all the time.</p><p><br /></p><p>That said, I don&#039;t think acetone would help in your case. That green spot looks like verdigris to me and acetone has no effect on verdigris.</p><p><br /></p><p>My advice would be to just leave it alone and store the coin properly.[/QUOTE]</p><p><br /></p>

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