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Green substance that apparently is not pvc related
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<p>[QUOTE="Gilbert, post: 3715452, member: 73104"]Forty years ago I purchased a complete set of Peace dollars F-12 to AU, that has been stored in a Whitman 9430 album. I haven’t really paid much attention to them, but last week I took a look and was shocked to see green crud on 9 of the 24 coins. Initially they were soaked in distilled water, but this did nothing. Thinking the green substance might be pvc related, I tried soaking in acetone for 24 hours. In the past I have treated pvc damaged coins using this method with good results, but again there was no improvement. Next they were soaked in xylene for 24 hours, and again no improvement. This is baffling. Thoughts? Should I try a quick dip?</p><p>Edit: This is the worst of the nine. Some only have crud on one side and to varying degrees.</p><p><br /></p><p>[ATTACH=full]995983[/ATTACH] [ATTACH=full]995984[/ATTACH][/QUOTE]</p><p><br /></p>
[QUOTE="Gilbert, post: 3715452, member: 73104"]Forty years ago I purchased a complete set of Peace dollars F-12 to AU, that has been stored in a Whitman 9430 album. I haven’t really paid much attention to them, but last week I took a look and was shocked to see green crud on 9 of the 24 coins. Initially they were soaked in distilled water, but this did nothing. Thinking the green substance might be pvc related, I tried soaking in acetone for 24 hours. In the past I have treated pvc damaged coins using this method with good results, but again there was no improvement. Next they were soaked in xylene for 24 hours, and again no improvement. This is baffling. Thoughts? Should I try a quick dip? Edit: This is the worst of the nine. Some only have crud on one side and to varying degrees. [ATTACH=full]995983[/ATTACH] [ATTACH=full]995984[/ATTACH][/QUOTE]
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Green substance that apparently is not pvc related
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