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<p>[QUOTE=&quot;Ian, post: 133009, member: 283&quot;]A good soak in acetone would probably do the trick, and without any damage to the coin. Acetone is a dangerous and volatile chemical, even though it is the main constituent to medern day `nail polish&#039;. it should always be treated with respect. Don&#039;t get it on your hands or inhale it if you can possibly avoid doing so. Certainly never use near a naked flame unless you want singed eyebrows or worse.....</p><p><br /></p><p>Warnings aside, it is a very useful part of any numismatic tool kit and worth </p><p>a try on your coin. The `green stuff&#039; is probably actively eating into your coin (Looks like typical pvc damage to me brought about through storage in inappropriate PVC `flips&#039; or sheets.[/QUOTE]</p><p><br /></p>

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