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<p>[QUOTE=&quot;desertgem, post: 569748, member: 15199&quot;]Doug :I Believe Doug is 100% correct on this. The very beginning stage of toning. On a non -PL Business strike or a matte proof, it wouldn&#039;t be noticed until much thicker layer. On a Proof or a Prooflike coin with mirrors, it is noticeable probably many years or decades before. A color toning zone would eventually follow as the interference layers increase thickness. JMHO, no proof either. Dipping might remove it from proof silver coins, <b>But</b>, your margin of error would be significantly less than dipping a MS coin. The mirrors are there because of the smooth level of the surface unlike a MS where is is like microscopic &quot;^^^^&quot; . The mirrors will dull much easier. </p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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