Carl Zeiss Jena Goerz Dagor 21cm (210mm) f/9 wide lens in #3 Acme Synchro Shutter. Serial #2561281. Made in Germany. Circa 1939. EARLY single coated. Covers  11x14 with movements. Shutter speed range is 1/150 - 1 second, and B and T. Front filter diameter is about 47mm and rear filter diameter is about 40mm. Weight 9 oz. Require 3x3" or larger lens board. Lens stop range is f/9 - f/45. Early coated glass. Lens is in Ex or 8 of 10 cosmetic condition. Fairly clean glass with one (1) visible mark on the middle of the front element. Clean rear element. No separation. No haze. Good working shutter. Smooth and clean shutter and aperture blades. Original retaining ring. Will work on 8x10 and 11x14 field and view cameras, like: Deardorff, Sinar, Cambo, Arca-Swiss, Toyo, Wista, Linhof, Wisner, Zone-VI, Shen-Hao, Kodak, Ebony and others. Great  VINTAGE "wide angle" lens. Fantastic "classic" made and RARE lens with LARGE coverage (all f/9 Zeiss Dagor call "wide-angle" lenses). Original retaining ring and Wista / Linhof type lens board. Sells  with NO RESERVE at price of $1795. I have more vintage Zeiss lenses, rare Protar and Plasmat lenses, Kodak Ektar lenses, vintage and modern Larger Format cameras, lenses and accessories, Portrait and Soft Focus Lenses. More great buys on my other auctions, eBay Store and web page.