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<p>[QUOTE=&quot;SuperDave, post: 2468637, member: 1892&quot;]No, I haven&#039;t, but the underlying difference is I consider &quot;toning&quot; to be a chemical reaction between one/more chemicals and the underlying metal of the coin, and you do not, because &quot;toning&quot; under my definition (and every numismatic glossary ever published) is <i>part of the coin</i>. It can be removed by chemical reduction, acid stripping, or scratching it off the surface, but only the first choice does not permanently remove metal from the coin which the mint put there.[/QUOTE]</p><p><br /></p>

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