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Posted: Tue Feb 23, 2021 7:08 pm
It is hard to see on the clipped coin but there is some kind of mark opposite of the clip. I am assuming the other is struck through grease.
Posted: Wed Feb 24, 2021 8:27 am
you can find why these marks exist on clipped coin under Blakesley effect here:
https://www.coinsandcanada.com/coins-er ... chet&id=26