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<p>[QUOTE=&quot;desertgem, post: 1631262, member: 15199&quot;]Let&#039;s give Doug a break on his post above.&nbsp; I have seen many coins where acetone was used to conserve it and in the process removed &#039;gunk&#039; that had a surface colored differently than the rest of the coin beneath and only exposed because of the acetone. It was probably more liked with the gunk than &#039;conserved &#039; with the acetone. Doug and I disagree on the reactivity of acetone, but he is correct on this.[/QUOTE]</p><p><br /></p>

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