H2, the two models look different in that the inner ring on the MK 22 is black while the ring on the MK 2H is brass-colored. In both cases this is regardless of the capsule's finish.
It's no big deal in any practical sense, and I doubt that anyone here will ever be able to, like, get someone to go out with them just for knowing this bit of trivia. But on the off chance that the information might make that crucial difference to someone here some day, I mention it, in the interest of preserving the taper species.
--best regards