Mintmark looks like the post broke off the die which is common. Closer pictures would help. A
Cud must be on the rim of the coin so there cannot be a
Cud on the mint mark. It is caused by a part of the die breaking off. There is also such a gas a
Retained Cud where the die is broke but the piece hasn't fallen off yet.
I believe this coin just has
PMD on the rim and a small post that broke off of the M/M filling it. Spendable IMO