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<p>[QUOTE=&quot;TheMont, post: 2616405, member: 80121&quot;]Again, I&#039;m just an old-time coin collector (with a BA and MA in Biology, not chemistry) but you gave a lot of IFs- IF the PVC is very old, IF the PVC is exposed to sunlight (I don&#039;t keep my coins out in thee sun), IF the PVC is exposed to water (again, I don&#039;t expose my coins to moisture let alone water), IF the PVC picks up anything from anywhere (that&#039;s why we keep coins in flips, capsules, etc.), IF the PVC degrades it can (not will) give off HCL gas, IF the HCL is dissolved in water (again, I keep my coins away from moisture) it can form Hydrochloric Acid. TO many IFS.</p><p><br /></p><p>Let&#039;s just agree that a coin that has a layer of PVC film on it has little to no worth, so trying a bath in acetone is a no lose try. If it works, you&#039;ve got a good coin, if it doesn&#039;t, you&#039;re back to where you started with the PVC film.[/QUOTE]</p><p><br /></p>

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