Nikkor Ai 200mm f/4 - a moderately compact manual telephoto lens with Nikon F lens mount. Compatible with practically all SLRs and DSLRs with Nikon F lens mount. Both early ones relaying on aperture prongs - “rabbit ears”, and later ones using the Aperture Indexing cut-outs. The condition is used, but good. The focus is smooth, the aperture opens and closes without delays. The optics is reasonably clean - I do not see any fungus, fog or scratches
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