I am not an expert on how it is done, but if they can counterfeit a mint mark and add it to a coin let alone counterfeit an entire coin, removing...
That coin might be worth $5 as an altered 1922-D. It is not a 1922- no "D". It is entirely too well struck for any of the 4 dies. See...
Not quite that sharp. but it compares favorably.
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