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<p>[QUOTE=&quot;Kentucky, post: 2447211, member: 33176&quot;]NEVER NEVER NEVER RUB.&nbsp; Rubbing will always leave hairlines, whether it be with a q-tip, a finger or sandpaper.&nbsp; Now on circulated coins, I will ease up on this a bit since the surface is already disturbed.&nbsp; Acetone is good for organic residue.&nbsp; [USER=17261]@BadThad[/USER] can check me on this, but I think PVC damage starts off with the plasticizer leaving goo on the coin and trapping some of the plastic or degraded plastic which can be a source of hydrochloric acid (muriatic acid).&nbsp; Soaking the coin in acetone should not damage silver at all (copper is another story).&nbsp; Leaving that green on there will cause further damage.&nbsp; Just be careful and slow, you can do, but you can seldom un-do.[/QUOTE]</p><p><br /></p>

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