Copper Plated Cents - My Research Into Causes Of Cracking And Splitting

I have been researching plating issues on Copper Plated Zinc Cents.

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.

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.

I am sharing one of those papers here in .pdf format
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Click on the .pdf link to read.

 

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Impressive. There are so many anomalies that seem to only occur on these coins it's great to see actual research into them.