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<p>[QUOTE=&quot;Steve Shupe, post: 8239729, member: 114551&quot;]That is not exactly true. If the object is removed from the source of air and moisture, it will stop toning. Normal air has moisture. If you live in a part of the country that has a higher humidity level, the oxidation or toning will be elevated.&nbsp; That is why if it is sealed away with a desiccant, The desiccant with absorb the moisture and limit further corrosion.&nbsp; a sort of suspended hibernation. I have many silver coins that still have their bright finish that were slabbed a couple of decades ago. The sonically sealed slabs prevent reaction by limiting the air/moisture and other contaminates that causes the toning from reaching the coin.[/QUOTE]</p><p><br /></p>

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