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<p>[QUOTE=&quot;DTCoins14, post: 3115790, member: 96279&quot;]Thanks for responding. It could have been polished I have no idea. The rim is copper plated, and the edge next to where the copper is missing is not sharp. The surface is mirror-like and smooth.&nbsp; I was also questioning whether it was zinc or not.&nbsp; Correct me if I am wrong, I have not had college chem in 3 years, but I was thinking that zinc corrodes rather fast and this shows no corrosion.[/QUOTE]</p><p><br /></p>

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