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<p>[QUOTE=&quot;desertgem, post: 2852216, member: 15199&quot;]The copper clad on late cents is very active, in fact it begins to tarnish very shortly after striking, but the tarnish in itself is protective as fresh copper isn&#039;t exposed directly to the surface gases, the previously tarnished layer is, and it is not as reactive. The same for silver, although different metal and a slightly less reactivity. One need not get paranoid about the holders unless they live in the worse of environmental situations. IMO. Jim[/QUOTE]</p><p><br /></p>

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