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<p>[QUOTE=&quot;desertgem, post: 2130907, member: 15199&quot;]John, at this point I am beginning to doubt that the silver chloride found could initiate a milk spot type of reaction as people have thought. I am thinking that any silver chloride crystals on a coin would sooner rather than later be exposed to light , and the silver chloride molecules would react and initiate a photo reaction to create a molecular size speck of metallic silver ( dark native color). Perhaps if any magnified photos showed a pattern of such on a section of the coin, the over all appearance might of a &#039;tan coloration&#039;, but I would have to be convinced. I think the silver chloride and possibly other silver halides, if found, are outliers; coincidental. I appreciate the insight and photos of the Perth mint people, but I would not currently say I agree on the importance of silver chloride. However, it has helped very much in allowing our visualization of the reaction . To eliminate , I would keep away such things as HCl.&nbsp; Jim[/QUOTE]</p><p><br /></p>

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