When coin hunting some rolls from the bank, I received 4 rolls with only 2020 American Samoa Quarters from the Philadelphia mint. Many of the coins have damage (indent) to the face resulting in a Blind Bat look. I was wondering if anyone can tell me anything about these quarters. Is it a strike through or post mint damage? Is it common to find a series of damaged coins like this? If it is a strike through, I think what was on the die was originally larger and as more coins were struck, bits of the gunk fell off and so the coins became less damaged as time went on.