Looks like PMD to me. Notice how the T & Y are mushed down. TD
Numismatist. 50 year member ANA. Winner of four ANA Heath Literary Awards; three Wayte and Olga Raymond Literary Awards; Numismatist of the Year Award 2009, and Lifetime Achievement Award 2020. Winner numerous NLG Literary Awards.
With the T and Y being "mushed down", that could happen with it being a struck through error, as the coin would not be able to be properly stuck up. If it were put into a vice, there would be way more damage than that.
If it were struck through "cloth," the "T" would show significantly less detail as the "cloth" pattern extends near the top of the "T." Same for the area around the "Y." Whatever it is, it is not a strike through. Likely PMD of some fashion. From the 2-dimensional images I would have just guessed weird toning.
Numismatist Ordinaire See http://www.doubledimes.com for a free online reference for US twenty-cent pieces
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TD
<< <i>Looks like PMD to me. Notice how the T & Y are mushed down.
TD >>
As for exactly what happened, I don't know.
See http://www.doubledimes.com for a free online reference for US twenty-cent pieces