Nikon Nikkor 500mm f/8 Reflex Lens, Excellent to Very Good

The Nikon Nikkor 500mm f/8 Reflex Lens is a compact and lightweight super-telephoto lens designed for Nikon F-mount cameras. Utilizing a catadioptric optical design, this lens achieves a long focal length in a portable form factor, making it ideal for wildlife, sports, and birding photography. The fixed f/8 aperture and manual focus operation provide precise control over depth of field and focus.

I inherited this lens from my father-in-law who bought nothing but the best and didn't use it. These lenses went on 2 safaris in Africa, and that's it. I'd be surprised if the shutter count exceeded 500, but I do not have a way to tel.