What is "Nikkor-O?". "O" is for "Octo" and means eight elements. This lens is non-AI and will not fit any modern SLR (but would be great on a mirrorless with an adapter).
This is an excellent general use wide angle lens. I enjoy using a 35mm as my every day focal length.
This one is in good condition with moderate wear. There is a small mark on the front element but it will not affect your image quality. Otherwise the glass is clean and scratch free. The focus is a bit dry but turns well.