Zeiss-Jena Tele-Tessar 18cm f/6.3 telephoto lens. Serial # 2254290. Made in Germany. Pre-war non coated lens. Circa 1938.  Chrome finish. This lens has been professionally adapted to work on Hasselblad 1000F or 1600F model cameras. Lens has close focusing down to 2.5 meter. Distance scale is in meters. Aperture f/6.3 - f/45. Filter size is 40.5mm. Heavy duty steel barrel. Lens is in Ex/Ex- or 7 of 10 cosmetic condition. No dent or dings. Clean glass. Some small dust spots inside that can be seen with a flashlight only. Some small fine VISIBLE coating marks on the rear that will not affect your photos. Smooth aperture blades. Smooth focusing. Lens comes with Zeiss front cap and a leather lens case. Very classic Zeiss Telephoto/PORTRAIT lens is good working order adapted to fit Hassy 1000F series cameras. Rare collectible pre-war Zeiss lens to find for Hassy 1600F cameras. Sells with NO RESERVE at a price of $325. I have more interesting Contax Rangefinder and Reflex cameras, Contax lenses and Contax accessories on my other Auctions, eBay Store and web page.