Dr. Garth Clark
Interviewer: David Lisot, CoinWeek.com ……
Dr. Clark is a medical doctor, a chemical engineer and current president of the Bellaire, Texas Coin Club.
He shares some of his research and the importance in the metallurgical processes used to determine the authenticity of coins especially with Texas Jola copper issues.
httpvh://youtu.be/MDa8DOfeXVw
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