VERY RARE BRASS LENS JNG RICH KNOLL LEIPZIG DOPPEL-ANASTIGMAT RIGONAR 240mm F4.5 Posted on November 28, 2023 by admin DOPPEL-ANASTIGMAT RIGONAR F=240mm F4.5. VERY RARE BRASS LENS JNG. Lens barrel is in nice condition without dings or dents. CONDITION IS VERY GOOD WORKING. Glass is very good for its age.