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<p>[QUOTE=&quot;TheFinn, post: 2985544, member: 90102&quot;]I would only keep mint coins with mint coins because of possible contaminants on anything circulated or red-brown.&nbsp; Also, don&#039;t mix bronze with copper-plated zinc because the electromotive effects of mixing metals will corrode them.[/QUOTE]</p><p><br /></p>

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