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Posted: Tue Feb 23, 2021 7:08 pm
by MakesCents
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.

Re: errors

Posted: Wed Feb 24, 2021 8:27 am
by troubadour
you can find why these marks exist on clipped coin under Blakesley effect here: ... chet&id=26