This is the classic 105mm f2.5, one of the best lenses that Nikon ever made. It is a lens that every classic Nikon user needs in the bag. This is the Photomic (non-AI mount) and works only on older F, F2 and Nikkormats. It does not work on any digital without modification or an adapter (except the DF). What is "Nikkor-P?". "P" is for "pent" and means five elements. This is the cool all black one. The lens is in good condition and works perfectly. The glass is clean and scratch-free. The focus and aperture are smooth. Caps are included.