What is a Nikkor-S? Back in the day Nikon had a system of letters for different numbers of elements in the lens. "S" is short for "Sept." which indicates seven elements.
This lens is non-AI and fits old cameras like the F and F2. It will not work on any modern camera without an adapter, though it is great on mirrorless with cheaply available adapter tubes.
This one has a few fine marks on the front and rear element along with a slight haze to the front element that may soften your images slightly. Otherwise the lens works well, the focus and aperture are smooth.
Lens caps are included. Get a deal on a nice lens!