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Secret Marks
Insider3
April 2022
in
Copper Coins
As many of you know, the Banknote Companies issued Postage Stamps with secret marks as a deterrent to counterfeiting. I suspect these exist on currency also.
Has anyone found secret marks placed on our copper coins by Mint Engravers?
Thanks
Comments
RICHARD560729
April 2022
That would be fascinating
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