This vintage Schneider Componar 7.5cm (75mm) f/4.5 darkroom photo enlarging lens comes in its 35mm diameter mount. There is haze inside of it, but it is free of any fungus or separation to its elements. Its aperture adjustment is smooth.
Rodenstock
Schneider
Kodak
Nikon
Schneider
Wollensak
Nikon
Schneider Kreuznach