This is a Nikon DE-2 eye-level finder for the Nikon F3. There is a dent on the front, please check the photos. There appears to be noticeable debris inside the viewfinder (see photo 4). Personally, I feel the optics are otherwise quite clean. There may be oversights such as mold or dust. The illuminator also lights up (see photo 6 *the body in the photo is not included*). Please ask for more detailed photos or any questions in the comments. - Brand: Nikon