Neat collection Vorpaledged.
I dig the early stage Lincoln brockage, the Potter. Cool pieces of history.
That is damage from a hand punch. Notice how the punch in the obverse obliterated the design on the reverse.
Here is a 2020D Roosevelt with the same heavy planchet striations. [ATTACH] [ATTACH]
With roller lines/planchet striations they exist because of the density of one area vs the next. These do not get fully removed from the planchet...
MS65 By the way I think you still have a GTG still open. You might want to check.
They look like heavy planchet striations to me. Those are the heaviest I have seen. That doesn't look like PMD to me.
Here is a page from Numista. Not sure if it will help. looks like there are a lot of links in the OP post. THREAD - IDENTIFICATION OF COUNTERMARKS...
I don't have credit cards, and only use cash.
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