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<p>[QUOTE=&quot;19Lyds, post: 1618485, member: 15929&quot;]This thread reminds me of these:</p><p><br /></p><p>[ATTACH]229646.vB[/ATTACH]&nbsp;&nbsp; [ATTACH]229647.vB[/ATTACH][ATTACH]229648.vB[/ATTACH][ATTACH]229649.vB[/ATTACH]</p><p><br /></p><p>The coins are NOT being harmed by this &quot;lime greening&quot; of the slab insert and not ALL slabs of this particular generation turn this &quot;Lime Green&quot; color.</p><p><br /></p><p>Why it does this, is totally unknown. Some say heat but since there is not indication of heat being applied to the slab&#039;s, I disagree.</p><p>Some say exposure to sunlight but I&#039;ve placed slabs in the sun on a hot day and nothing happens.</p><p><br /></p><p>I think it would take some serious chemical analysis to determine exactly what is occuring. The same holds true with the OP&#039;s dime tubes.[/QUOTE]</p><p><br /></p>

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