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<p>[QUOTE=&quot;Pete Apple, post: 26137931, member: 103982&quot;]I have been researching plating issues on Copper Plated Zinc Cents.</p><p><br /></p><p>The information I have found has been both interesting and challenging. My research has resulted in some papers I prepared to organize the information in a way that I can understand.</p><p>Unfortunately, I have only scratched the surface! It seems that I continue to find significant related aspects that I may yet include in future revisions.</p><p><br /></p><p>I am sharing one of those papers here in .pdf format.</p><p>Click on the link to read.</p><p><br /></p><p><br /></p><p>CONCLUSION</p><p>The average weight of Copper Plated Zinc (CPZ) Proof Cents, compared to the average weight of CPZ Business Strike Cents, along with a permissive Mint Tolerance for Copper Plating Thickness on Proof Cents, and separate specifications for each of the three planchet types in use, suggest that the copper plating on proof cents is at least twice as thick (or more) as the copper plating on business strike cents.[/QUOTE]</p><p><br /></p>

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