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<p>[QUOTE=&quot;cladking, post: 1304134, member: 68&quot;]Thanks for the kind words.</p><p><br /></p><p><br /></p><p><br /></p><p>I don&#039;t really know that it&#039;s actually PVC in the inner layers of plastic and this is largely assumption based on the color it burns and that it&#039;s a soft plastic.&nbsp; For most dates this hasn&#039;t presented a lot of problems yet but it is coming.&nbsp; Copper is especially prone to damage from this and all of one mint mark in the &#039;68 Philly packet and most of the copper in the 84 Denver packet are already destroyed.&nbsp; The former have small carbon spots all over them but coins removed and stabilized are OK.&nbsp; </p><p><br /></p><p>The big cu/ ni&#039;s tend to be prone to toning though most of these actually look better with the toning.&nbsp; The worst date is the &#039;69 followed by the &#039;68 and then the &#039;70.&nbsp; Finding any of the 40% coins without at least some hazing is getting difficult.&nbsp; This hazing on these 80% silver surfaces is more difficu;lt to remove and less successful in my experience than other denominations. You can often get it off completely but not always.&nbsp; </p><p><br /></p><p>It appears to be getting caused by the interior layers of plastic.&nbsp; While my guess is that it was used to help bond the layers together it is possible there was another purpose such as to help keep the coins from sliding arond inside.&nbsp; I do rarely see coins that have been damaged from sliding around in hard plastic but this is unusual.[/QUOTE]</p><p><br /></p>

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