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<p>[QUOTE=&quot;Michael K, post: 26525941, member: 78298&quot;]Acetone won&#039;t damage the metal on the coin or change the color.</p><p>I wasn&#039;t sure if it was verdegris, when I said goo, that is what I meant</p><p>and acetone will remove organic material while leaving the coin intact,</p><p>or do nothing. I know you meant &quot;lighten the green area&quot;. But I doubt that would happen. If the goo is some kind of glue or tar or residue it could come off.[/QUOTE]</p><p><br /></p>

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