This is a Kenko MC Close-Up Lens No. 1, 52mm. There are no noticeable scratches or stains. The lens is free of mold and fogging, and is very clean. I am an amateur who enjoys photography as a hobby. I don't have much specialized knowledge about lenses, so I apologize if I have overlooked anything. Please purchase if you understand. It will be shipped in a resin lens filter case.