No and yes... as the other gentlemen have already said, no, it's not a "mis stamp", but yes, it is a "real" coin, meaning what you have, unfortunately, is a beat nickel worthy of no premium. With that said, welcome to the forum, sir.
I voted 3 & I see it now , in triplicate . The 3rd trinity of triplets that went for a ride on the troika and were a trio that also enjoyed trivium, they wrote a trilogy of stories involving a triad engaged in a manage a trois . Oh and sorry it's post mint damage.