For sale is new, never used ultra fast Rodenstock XR-Heligon 1,2/83mm lens, No: 11396949. Nice cosmetic and optical condition. Few very slight scratches on the lens body. Signs from mounting screws on the mounting ring. Absolutely no scratches on the glasses. The rear glass is  covered with original protection foil -please see the pictures. No haze, no fungus, no separations. No aperture, no focusing. I sell the lens with mounting ring and solid metal front cap. Ultra rare nice lens!!