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<p>[QUOTE=&quot;Conder101, post: 3613328, member: 66&quot;]There are acids that attack the copper more strongly than the zinc, but they do attack the zinc to some extent as well.&nbsp; That is why cents that have had the copper plating removed (rather than simply having another layer plated over them) have a dull silver gray rough surface with no mint luster.[/QUOTE]</p><p><br /></p>

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