Hey all, Hope all of your weekend is going well. I just found this coin and I do not know if it is an error or PMD>
This is either a strike though,or lamination issues if it is lamination then it is considered an error.
The spot behind the neck appears to be raise, leading me to believe it might be some substance stuck to the coin. Do as @Pickin and Grinin stated and try an acetone bath and toothpick to see if it lifts off.