Hi, I have them both, actually the 80mm 2.4 Zenzanon MC and the 75mm 2.8 Nikkor-H.C (6 element, I think. Same lens as the Plaubel Makina 67 !!!). I actually have quite a few of the harder to get lenses for the system but these 2 are quite close in FL and I usually use the 100mm Zenzanon anyways. It's really hard to find any of these without some kind of minor interior issue. The H.C has a small spot of fungus inside the front element and the 80mm has what looks like dried tiny water droplets on the periphery inside. Both lenses have no haze and are sparkly clear looking through them. Maybe I could just send them both to you and you decide what you want? Bob in Michigan.
I uploaded some pictures. The 80mm is the larger lens in the dual pics, the 75mm has the 2 focusing tabs at 180 degrees from each other. The gaffer's tape on the rear caps keeps the caps from rotating loose and jiggling (all the rear lens caps do this without the tape). I'm considering selling all my Bronica EC-TLII outfit which is massive (even have the 300mm, 400mm, 500mm 3-lens set with the focusing unit) since I have been using the Hasselblad recently. Hard to give up due to the very small size of the lenses due to the same principles that rangefinder lenses use (non-retro-focus?) Let me know if you have any other interests along this line. Bob.