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<p>[QUOTE=&quot;GDJMSP, post: 1099741, member: 112&quot;]Well I&#039;m no chemist like you Thad, but this is the first time I have ever heard anyone say that PVC damage and verdigris are the same thing. Even though you are the chemist I have hard time agreeing with what you are saying.</p><p><br /></p><p>I can see where both can cause similar damage to coins, but as I understand it verdigris is the corrosion of copper caused by moisture and acid compounds in the air. Where PVC damage is the release of plastecizers (softeners) from the plastic. Yes I understand that those softeners turn acidic and that that is what actually damages the coin. But to say they are the same thing, that&#039;s going a bit too far in my mind.</p><p><br /></p><p>By the way, acetone will remove even dried up PVC residue. But acetone won&#039;t even touch verdigris, other than to remove the soft powdery parts and plain water will do that much. That makes it harder for me to consider them the same.[/QUOTE]</p><p><br /></p>

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