Leica Summar 5cm (50mm) f/2 collapsible rangefinder screw mount M39x1 LTM standard lens. Serial #333065. Made in Germany. Circa 1936. Perfect fit for Leica III, IIIA, IIC, IIIF, IIIC, IIF, IIIF ST or Leica IIIG cameras. Can also be used on most mirrorless digital cameras with the proper adapter. 6 lens elements. Uses Leica A36 slip over filters. Close focusing from 3.3 feet or 1 meter. Distance scale is in meters only. Aperture range from f/2 - f/12.5 with no "click" stops. Lens aperture has 13 aperture blades with the hexagon opening. Single coated lens. Lens is in Ex or 8 of 10 cosmetic condition. No DENTS or DINGS. Overall decent condition lens barrel with a few small marks around. Clean glass. Optics have recently been cleaned best as possible. Front lens element with some small fine cleaning marks. These will not affect your photos. Smooth focusing. Smooth working and clean aperture blades. Vintage light weight "classic" Leica Screw Mount standard lens in good shooter condition with original Leica metal front & rear lens caps. Sells with no reserve at a price of $450. I have LOT of other Leica screw mount, M vintage cameras and lenses, Leica R lenses, Leica Copies, 35mm Rangefinder and Vintage and Collectibles. There are always unique & unusual items on my other Auctions, E-Bay Store and Web Page.