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<p>[QUOTE=&quot;krispy, post: 642747, member: 19065&quot;]Kanga: </p><p>Info about the type of plastic/polymers these TPGs use is likely proprietary to ward off counterfeiters and competitors since they have a lot invested in security/securing coins and grades. I would also float the idea that that &#039;protective coating&#039; you mention on the new edge view slabs might be UV protection. A lot of delicate art on paper is presented framed behind UV Plexiglas and Lexan brand sheeting materials. It seems UV protection might be a beneficial feature on some coins and paper currency as well. I mention this UV possibility in the event that your plastics repair chems happen to have any warnings about use or non-use on plastics with/without UV properties. </p><p><br /></p><p>This and your other thread are very interesting. Hope to learn from your experiments with the slabs and repair kits. Don&#039;t forget to post pics as you progress. Thanks.[/QUOTE]</p><p><br /></p>

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