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<p>[QUOTE=&quot;gatzdon, post: 284883, member: 8247&quot;]Whether or not to use acetone?&nbsp; </p><p><br /></p><p>The answer will always vary with the coins.</p><p><br /></p><p>For Example, </p><p><br /></p><p>Proofs that I pull out of circulation, I use acetone to remove the fingerprints.&nbsp; In most cases, this will have no noticeable effect on the coin (other than to remove dirt) as the metal has not been damaged (yet??).</p><p><br /></p><p>Older coins and even most errors, i would not dare dip them in acetone.&nbsp; The reason is that once the surface of the coin has been damaged, removing dirt can actually reduce eye appeal.&nbsp; The dirt may be filling in pits and crevices leaving the coin with a smooth appearance.&nbsp; Remove the dirt, you get a sand paper look to the coin.</p><p><br /></p><p>Now if the dirt is NOT inert, then you need to remove it immediately.&nbsp; Acetone is one of the safest solvents to use for that purpose.&nbsp; Olive oil is another good one, but Olive Oil does in fact modify the surface also.</p><p><br /></p><p>Hope this helps[/QUOTE]</p><p><br /></p>

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