A vintage manual focus rangefinder lens with a fast aperture for Nikon S-mount cameras.
The Nikon Nikkor-P.C 105mm f/2.5 is a rangefinder lens for the Nikon S-series (Nikon Rangefinder) bayonet mount, produced in the 1950s for the Nikon S and S2 cameras. The P.C designation indicates five-element construction; the 105mm f/2.5 is one of the most admired portrait lenses of the era. The same optical formula was later adapted for Nikon F mount and became famous as the Nikkor-P 105mm f/2.5.
105mm focal length, f/2.5 maximum aperture, five-element P.C formula, Nikon S bayonet mount (rangefinder, not SLR), designed for 35mm rangefinder photography.
The Nikkor 105mm f/2.5 formula is considered one of the great portrait lenses of the twentieth century. The rangefinder S-mount version predates the identical formula's migration to Nikon F mount, making it a sought collector piece. Smooth bokeh at f/2.5 with sharp centre performance. Nikon S mount is not compatible with Nikon F SLR or Z mirrorless bodies without specific adapters.
Verify this is the Nikon S (rangefinder) mount version, not the Nikon F SLR mount. Inspect for fungus, haze, and coating condition. Confirm rangefinder coupling engages correctly on a compatible S-mount body. Check focus helicoid and aperture blades.