We love when rare pieces of camera gear go up on the auction block and this is one of Nikon’s treasures. The 2,000mm F/11 is actually a reflex lens, which uses mirrors to alter the path of light through the lens and gives it a field of view equal to a much longer lens. It has a fixed F/11 aperture, which means everything is shot at F/11. You can’t go any smaller or bigger.
A beat-up old copy was for sale a few years ago for $25,000, so it will be interesting to see what kind of price this one fetches.