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<p>[QUOTE=&quot;kanga, post: 514376, member: 9270&quot;]Also olive oil is slightly acidic which marginally &quot;improves&quot; a coin&#039;s surfaces.</p><p>I had a 1909-SVDB with advanced PVC residue damage.</p><p>It was soaked for several months in olive oil.</p><p>That eliminated the &quot;goo&quot;.</p><p>But of course made the damage much more obvious.</p><p>&nbsp;</p><p>I would suspect acetone would work well in cleaning off the olive oil.</p><p>Then the final distilled water rinse.</p><p>&nbsp;</p><p>BOTTOM LINE: Olive oil not only &quot;conserves&quot; (debris removal) but also &quot;cleans&quot; (improves the surfaces).</p><p>I suspect if not overdone and carefully removed there would not be a detectable change.[/QUOTE]</p><p><br /></p>

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