u/General-Stay-6514

I found this 1972-D half dollar with a (on the left and weighs 11.3g) coin roll hunting, it appears to have been struck through grease and also appears to have something like a 95-100 degree clockwise rotated reverse plus it has a normal looking reeded edge. I do not see/hear anything to suggest it is a magician's coin, basically I'm just wondering if it is actually an error or just a contemporary counterfeit.