Nikon Nikkor-P 1:2.8 f=75mm for Bronica 6x6

The standard lens for Bronica S, S2 & S2A cameras, with an angle of view similar to a 45mm lens on 135 format. This lens had a long production run from 1958 until mid-late 1970s. Over that time there is some evolution in the lens features:
Early lens marked 7.5cm:

Late multi-coated lens: