@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.
"The danger we all now face is distinguishing between what is authentic and what is performed."