Leica Super Angulon-M 21mm f/3.4 BLACK Leica M mount rangefinder lens. Serial #2473513.  Made in Germany. Circa 1971. Cat. #11103.  Perfect fit for the Leica M1, M2, M3, M4, M5, M6, M7 and Leica MP. Requires separate 21mm Viewfinder (not included). Eight (8) lens optical elements. Filter size is E48. Close focusing from .4m or 16 in. Aperture range from F/3.4 to F/22. Weight is 10.7 oz. Lens is in Ex+/Ex++ or 8.5/9 of 10 cosmetic condition. Recent CLA in 2023. No DENTS. Overall nice condition. Clean glass. Optics have recently been cleaned. Nice coating. Front element is very clean, with nice lens coating. Smooth focusing. Good working aperture. Clean and smooth aperture blades. Comes with original Leica 12501 Hood, Leitz rear cap, Leitz projector front cap. Fantastic "classic" extreme wide angle lens for your lovely Leica M camera. Sells  with NO RESERVE at price of $1295. I have many other Leica M and TM lenses, Leica Film and Digital cameras, Leica Copies, 35mm Rangefinder and Vintage and Collectibles. There are always unique & unusual items on my other Auctions, eBay Store and Web Page.