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<p>[QUOTE=&quot;Oldhoopster, post: 2693948, member: 84179&quot;]Conder101 is right.&nbsp; Zinc will leach into the copper plating bath.&nbsp; I recall reading (don&#039;t remember the source) that during the early days of production, zinc blanks would fall into the plating tank and dissolve.&nbsp; The resulting copper plating would contain zinc (Brass is an alloy of copper and roughly 30-50% Zinc).&nbsp; Typically, the &quot;brassy&quot; cents are mostly seen during the early years of production.&nbsp; Since then, process control improved.</p><p><br /></p><p>Also, you cannot use color to verify a &quot;Brass&quot; plated cent. You need to do some sort of quantitative analysis like XRD or XRF to determine the zinc content.[/QUOTE]</p><p><br /></p>

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