@timmy, yes those "mintmarks" seem to have been added by someone after the coin left the mint. Additionally, I see that your coin has a die chip between the B and E in LIBERTY. These so-called BIEs are quite common on cents from the 1950s, but still fun to look at as legit mint errors.
I'd probably save it in a 2x2 for the novelty of those counter-punches.
"If you climb a good tree, you get a push."
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