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<p>[QUOTE=&quot;Robert Ransom, post: 4770047, member: 97872&quot;]NO. In my opinion, no cleaning allowed with the exception of ancients and the necessary removal of crud to determine what lies beneath. For moderns, removal of crud, mud and attached debris is acceptable as long as the &quot;cleaning&quot; does not alter the coin by removing any of its surface. Dipping removes a thin layer from the surface of coins and thereby modifies the appearance depending upon the coin material.[/QUOTE]</p><p><br /></p>

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