This vintage Schneider-Kreuznach Tele-Xenar 135mm f/4 telephoto lens is for use with DKL mount cameras and adapters. There are a couple of light scuff marks on its exterior and there is a light haze inside of it. Its aperture moves slowly and gets stuck open. Its focus adjustment is smooth and its glass is free of any fungus or separation to its elements. There is no oil on its aperture blades.