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<p>[QUOTE=&quot;medoraman, post: 1110101, member: 26302&quot;]I agree they can get bronze disease, and it can be a severe problem. The main problem is if you treat it is can treat underneath the silver layer potentially and dislodge the entire surface. If the coin is a fourree this is more of a concern, and I have not seen this problem on a MA, but have seen it on a Gordian III coin that I do not believe was a fourree.</p><p><br /></p><p>Myself, I would not treat it in anything liquid, and would be more tempted to bake out the moisture on a silver coin. This shouldn&#039;t darken silver like it could copper. However, please do not take anyones advise here and have a professional look it over.[/QUOTE]</p><p><br /></p>

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