I'm decluttering at the request of my family. This is a Tokyo Kogaku Topcor-S 5cm 50mm F2 lens with a Leica L mount. The lens condition has something like a mark on the edge of the lens. Other than that, I think there are no problems. The focusing ring is also smooth. This is based on my amateur assessment. Please be aware of this. The lens is a Leica L39 mount, not a Nikon F mount. Other features...vintage lens