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<p>[QUOTE="mbogoman, post: 8170659, member: 95843"]I can't imagine why a near worthless Thai baht coin would have spent any time in a PVC holder - the holder would be worth more than the coin. Since the coin is a copper alloy, it is far more likely that the green stuff is verdigris. If the acetone bath doesn't work, try one of the "verdi-care" type products on the market.[/QUOTE]</p><p><br /></p>
[QUOTE="mbogoman, post: 8170659, member: 95843"]I can't imagine why a near worthless Thai baht coin would have spent any time in a PVC holder - the holder would be worth more than the coin. Since the coin is a copper alloy, it is far more likely that the green stuff is verdigris. If the acetone bath doesn't work, try one of the "verdi-care" type products on the market.[/QUOTE]
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