All right so there's a whole lot of learning but I think if I read like error reference.com and variety of Vista correctly and that this is a either partial collar with an its an off center punch., I feel like I'm missing something about this...
I'm guessing it's just a MAD(misaligned die error) error. one side is off while the other side is not.
Don't use the word punch when referring to coins. They are Struck so you say strike as in the issue that it has.. Misaligned Die Strike. A punch is a tool someone would use to leave an indented image into the field of a coin. It is also a fruity drink and what boxers do.. punch
