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<p>[QUOTE=&quot;medoraman, post: 2236629, member: 26302&quot;]I simply do not know on gold. The byzantine was just dark. On silver it will produce many colors. It does not have to be cigarette smoke, any kind of aerial deposition can leave a thin film on the surface of a coin changing its color appearance. My aunt&#039;s good silver would look very pretty a few weeks after she cleaned them due to smoke residue. Coins in my hand have included silver sets with the smoke smell so thick on the cardboard I had to take the coins out of the folder outdoors, and wash my hands after. Some of those coins would lose their &quot;color&quot; after a soak, while others would still be toned, (but might change colors). </p><p><br /></p><p>Sorry, I was not trying to say i had direct experience with highly toned US gold that was only due to smoke. Just pointing out its another consideration for some coins.[/QUOTE]</p><p><br /></p>

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