
it's just Post Mint Damage.
PMD. Nothing in the minting process could have caused this. Usually when you see something incuse on one side of the coin with a corresponding area that's raised on the opposite side, it's going to be damage.
Keep searching and post when you have questions!

ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!!
