View attachment 1254715 You will have to ask my attorney he told me not to say anything What do you think about this 1963 nickel D mint mark?
It's called a dryer coin. They get stuck and the drm turns on them wearing them flat like yours. It's PMD.
Well I'm sorry to tell you. But what you have is most likely post mint damage also. That's no mint error of any kind.
there's more than one dryer in the world. Go to a laundrymat and listen to the machines. One can usually hear more than one machine that has coins rolling through them.
The OP's coin is not a "dryer coin". But it is damaged. Both faces were heavily abraded after the coin left the MInt.