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<p>[QUOTE="Tom B, post: 1933536, member: 11854"]That does not look like PVC. As Chris has stated, it is typically bright green. Woods contain acids and toning is typically accelerated by an acidic environment. These coins have been in this clock for quite a while and the acidic environment, likely along with any finish that the wood was treated with prior to sale, make a great place for a coin to take on a layer of toning.[/QUOTE]</p><p><br /></p>
[QUOTE="Tom B, post: 1933536, member: 11854"]That does not look like PVC. As Chris has stated, it is typically bright green. Woods contain acids and toning is typically accelerated by an acidic environment. These coins have been in this clock for quite a while and the acidic environment, likely along with any finish that the wood was treated with prior to sale, make a great place for a coin to take on a layer of toning.[/QUOTE]
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