Nippon Kogaku f=2.5cm 1:4 W-Nikkor-C - Leica screw mount

Cult and very rare ultra wide angle lens from Nikon! It's a truly tiny rangefinder lens in over all good condition. Comes with the equally original Nikon (Nippon Kogaku) 2.5cm (25mm) external viewfinder. Provenance of rapper and Leica LTM afficionado MC Einar!