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<p>[QUOTE=&quot;desertgem, post: 800253, member: 15199&quot;]From your description, the liquid may be a shellac or lacquer of some type if it has hardened, or maybe insect residue.&nbsp; Be aware that the surface beneath the spot may be toned a different color than the rest of the coin, and if removed, the appearance may not be an improved one. If you are willing to take that chance, start with isopropyl alcohol ( I prefer the 91% from walmart ( cheap) ). If that doesn&#039;t work, try some pure acetone for a short soak. If the spot remains, it is not worth the effort and cost of chemicals to try and remove it. IMO.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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