This very rare C.P. Goerz AM. Opt. Co. 10 1/2" (267mm) f/8 No. K11-807900 Kenro Dagor large format process lens has a rear thread diameter of 57mm. It does not come with its retaining ring, but both caps are included. It has some finish loss and a few light scuff marks on its exterior. Its aperture adjustment is smooth and its glass is free of any fungus, haze, or separation to its elements. There is no oil on its aperture blades.
