Sankyo Komura 135mm f/2 M42 Pentax mount  telephoto lens. Made in Japan. Serial # 3210033. This lens will cover FULL FRAME 35mm or digital. Lens will fit Pentax manual focus M42 cameras like Pentax SP, Pentax Spotmatic,Prarica , Yashica, Mamiya and all other M42 screw mount camera's. Can also be used with a Pentax k adapter that allows this lens to be mounted to any Pentax film or digital camera that takes Pentax K baynet mount lens like Pentax K1000, LX, Me or digital cameras like Pentax K100, K200 K30and K20. This lens can also be used on other brand mirrorless digital cameras with the proper adapter. Preset manual lens aperture is f/2 - f/16. Lens uses 77mm filters. Minimum focus distance is 5 feet. or 1.5 meters. This clean lens has a fast speed of f2 and covers full frame 35mm. Lens is in Ex/Ex+ or 8/8.5 of 10 cosmetic condition. No dings or dents. Nice clean optics. Front lens coating does have some fine cleaning marks on it that will not affect your photos. Good working PRESET lens aperture. Blades are clean and smooth. This scarce lens is very fast for a 135mm telephoto lens.. Great BOKEH. A must have portrait/telephoto lens for your Pentax manual focus film or digital system with an adapter. Lens comes with case,  after market front and rear caps and  77mm UV  and polarizing filters. Sells with NO RESERVE at a price of $425. I have more Pentax cameras, lenses, accessories, 35mm Rangefinder cameras and lenses, Medium and Large Format cameras, on my other Auctions, web page and E-Bay Store.