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<p>[QUOTE=&quot;Kentucky, post: 2482872, member: 33176&quot;]I have to differ with you on this.&nbsp; Plasticizers for PVC are fairly high molecular weight compounds that tend to be oily (dioctyl phthalate or DOP is one of the most common) and migrate between the polymer strands to loosen them up and make the plastic softer.&nbsp; With age, the plasticizer can leach out onto the coins creating a gooey mess and providing a convenient medium for other chemicals to get trapped in and damage the coins.&nbsp; Old PVC can decompose and release hydrochloric acid (or hydrogen chloride gas...kid of the same stuff) and the plasticizer can make a toxic salve with it to start verdigris on the coin.[/QUOTE]</p><p><br /></p>

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