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<p>[QUOTE=&quot;-jeffB, post: 4864032, member: 27832&quot;]For what it&#039;s worth, the folks who process coins at <i>grading companies</i> handle them with bare hands before they&#039;re put into slabs. Now, those folks are probably careful about washing their hands, and not especially sweaty or grimy -- but still, they&#039;re <i>pros</i>, and <i>their company is on the hook if a (non-copper) coin degrades in the holder</i>, so I&#039;d expect them to be following practices that protect the coins. Those practices <i>don&#039;t</i> routinely include soaking the coin in water, acetone, or anything else, as far as I know.[/QUOTE]</p><p><br /></p>

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