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<p>[QUOTE=&quot;Stevearino, post: 3918514, member: 74571&quot;]PVC (Polyvinyl chloride) damage is the green gunk on coins, a contamination from the plasticizer which softens flips or holders.&nbsp; That might not be the 100% correct scientific explanation, but once you&#039;ve seen it you&#039;ll recognize it.&nbsp; Over the past few days I have repeatedly soaked an expensive Norwegian coin in acetone to clean up PVC damage.&nbsp; I was just getting ready to put it into a Saflip (which has NO PVC) to send in to NGC and noticed minute green spots all over the coin.&nbsp; Made me sick. I&#039;m glad I found them before sending the coin in.</p><p><br /></p><p>Steve[/QUOTE]</p><p><br /></p>

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