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<p>[QUOTE=&quot;John N. Cross, post: 2858658, member: 76571&quot;]Is there a patient coin collector who could tell me how to remove un unsightly, blotchy staining on an old hammered silver coin that I have?&nbsp;&nbsp; I don&#039;t believe it can be verdigris, as there&#039;s no green colouring at all.&nbsp;&nbsp; Is this &#039;bronze disease&#039;, or has the coin, a recent metal detectorists find, been in contact with some ferrous material for hundreds of years.&nbsp;&nbsp; Could some other &#039;acid&#039; have stained the coin?</p><p>More importantly, what may remove it; I&#039;ve tried acetone and &#039;Verdi-Care&#039;, with no success.&nbsp;&nbsp; It looks very much like a smoothish rust.</p><p><br /></p><p>Any help or advice would be most helpful; thanks in advance.[/QUOTE]</p><p><br /></p>

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