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<p>[QUOTE=&quot;medoraman, post: 2234085, member: 26302&quot;]Doug, I know you and I disagree about gold toning. Your position is that it does, my position is only the other metals tone, and other &quot;toning&quot; people see is in reality light surface depositions that gold color reflects through causing a toning effect. Ying and Yang.</p><p><br /></p><p>I agree with your description of the coin surface. One thing I would point out, though, would be that the act of striking will cause changes to the planchet and alloys. People forget how violent striking is to a coin. It literally melts the surface of the metal for a fraction of a second. Ancient Romans used this fact to make a planchet with low silver content look silvery because the silver would melt and coat the outer layer with a thin layer of molten silver when struck. Do we have any data on how gold/copper planchets react under striking pressure? Do we know for sure micro surface enrichment of copper does not happen under those circumstances? You are reacting to what you have seen, I am reacting to what I have seen. I have seen a lot of &quot;toned&quot; gold coins coming out of smokers houses, and none out of non-smokers houses where the coin was stored properly.[/QUOTE]</p><p><br /></p>

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