Ca.1961-1965, rare wide-angle Version 2, referred to as Gutta Percha. The distinctive focus ring with raised knobs was made of Gutta Percha, a rubber like product. This lens and the following versions were all automatic aperture, and have the small pin on the rear of the lens which connects to the camera body. In good used and vintage condition, with front and rear lens caps in original letaher keeper.
