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<p>[QUOTE=&quot;satootoko, post: 86116, member: 669&quot;]For that metallic composition, the most likely generator of green guck is definitely PVC.&nbsp; IMHO the best way to find out for sure is to assume that itis PVC damage, and treat the coin by bathing briefly it in pure acetone (not acetone-based nail polish remover which has other chemical additives); followed by a rinse in de-ionized water and air drying on a soft cloth.</p><p><br /></p><p>If it goes away, the coin <i>used to have</i> PVC damage. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /> </p><p><br /></p><p>If not, it&#039;s other corrosion. probably not curable.&nbsp; <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie3" alt=":(" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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