You are buying a great lens. The Nikkor 55mm 3.5 micro is considered one of the sharpest macro lenses ever made, even to this day lenses are measured against the Nikkor 55mm 3.5. This lens has a Nikon Non-Ai mount.

This is in good used condition showing typical signs of use and wear. The aperture is snappy and oil free. The optics are clean and clear with no haze or fungus. See images for the best representation of cosmetic condition.