This very rare C.P. Goerz AM. Opt. Co. 8 1/4" f/6.8 Kenro Dagor large format process lens comes with its retaining ring. It is serial number K807444. There is mild separation inside of this lens around its outer rim. Most of it is in the rear element grouping (please see photos). It also has a few tiny cleaning marks on its front and rear element. Its aperture adjustment is very smooth, and its glass is free of any fungus or haze. There is no oil on its aperture blades.
