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<p>[QUOTE=&quot;GeorgeM, post: 3836480, member: 28550&quot;]Would there be a reaction between the iron and the silver or copper that&#039;s causing the rust to adhere? Or is it probably something like calcification that can be chemically weakened without attacking the coin itself? That&#039;s what I&#039;m hoping to find out with the acetone, in addition to seeing how long exposure affects the surfaces.</p><p><br /></p><p>I&#039;m adding a glass cooking tray over the top to slow down acetone loss. Good idea - Thanks.[/QUOTE]</p><p><br /></p>

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