My college just received a large donation of old camera equipment, including quite a few 35mm SLRs. I was asked to look through it all and come up with a value for the donor's tax records. Going through the cameras, I found mostly Nikkormats, one thoroughly trashed Nikon F, a couple FMs, and basically the lenses you would expect to see (nothing exotic, mostly 50mm).

And in the bottom of the last box: a 64xxxxx Nikon F with the original (square eyepiece) eye-level prism and a 5cm f/2 Nikkor-S (!) lens, possibly the original lens that came with the camera. It's a little brassy, and in need of a good cleaning, but it seems fully functional. Pretty much made my day.