Note that this is the TV version of the lens, and probably lacks focusing capability. With the very narrow DOF of this lens, that makes it pretty close to useless. Unless you need a paperweight... 😀 Seller makes no mention of this. Usually there are problems mounting the lens, because of the internal baffles in the camera. The normal lens has cutouts on the rear protrusion, the TV lens does not.
Didn't check any further to see if the camera was a 7sz, but doubtful.
Harry