Nikon AF Fisheye 10.5mm f2.8G ED DX Nikkor  type_Optical Remote but it's not: it's a

but it's not: it's a simple

designed for the M42 thread mount

you'll like this finder

A fun novelty

4 AI Nikkor is in excellent condition with only minor cosmetic wear and slight dryness in the focus

Nikon AF Fisheye 10.5mm f2.8G ED DX Nikkor &nbsptype_Optical Remote but it's not: it's aThe Nikon AF Fisheye 10. 5mm f2. 8G ED DX Nikkor is a compact fisheye lens for Nikon F mount cameras. Designed to provide corner to corner coverage on DX sensors, this lens can also be used on a full frame camera, if you don't mind a rounded off image. In excellent condition, with minor cosmetic wear, clean glass, good function. Includes front and rear caps.