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<p>[QUOTE=&quot;Tom B, post: 1528557, member: 11854&quot;]It sounds like PVC was on the coin.&nbsp; I do not know that MS70 removes PVC or not, but soaking the coin in acetone will get rid of the PVC.&nbsp; Of course, if there is underlying damage to the metal then that will become visible, too.&nbsp; If you decide to use acetone then please keep in mind that it is <i>extraordinarily flammable </i> and that you should keep your work in an area of <i>excellent ventilation. </i>&nbsp; Also, if you use acetone you may then dip it in multiple aliquots of acetone so that you do not need to rinse with water and definitely do not need to pat dry.[/QUOTE]</p><p><br /></p>

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