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<p>[QUOTE=&quot;GDJMSP, post: 1036900, member: 112&quot;]To me I think it is a question of experience rather than a question of knowledge. Example - I have personally seen coins dipped in acetone (not rinsed) develop a whitish cast to them. I have also seen them develop tiny, tiny whitish spots or flecks. But on coins dipped in acetone and then rinsed in distilled water and left to air dry I have never seen either of these two things happen.</p><p><br /></p><p>By the same token I have seen copper coins dipped in acetone turn all sorts of garish colors while others will say they have never seen it happen. And science says it should not happen. But I have seen it with my own eyes and I tend to believe my eyes over what science says should or should not be.</p><p><br /></p><p>Just for what it&#039;s worth ..........[/QUOTE]</p><p><br /></p>

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