Nippon Kogaku Nikkor S.C 5cm 50mm f1.4 Nikon S Mount MF Lens Nippon Kogaku. Working NIKON NIPPON KOGAKU NIKKOR-S 50mm F1.4 Olympic S-mount. Nikon Nippon Kogaku NIKKOR-S C 5cm F1.4 S-mount single-focus lens #M573.
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