What's really needed is for all submissions sent in above the economy/modern level to be scanned into a shareable database. All scans of new...
Nice work! Have you notified the TPG that certified the fakes? Little surprising the counterfeiter would choose this coin. Only 7 are believed...
Below is Weller's description of a glass brush. I think where he mentions thickness, he's writing about the bundle of fibers, not single fibers....
Advice below is from Cleaning and Preservation of Coins and Medals by Gerhard Weller. Cal [ATTACH]
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