Zeiss aus Jena 3,5/135mm lens with M42 mount
This solid Jena 3.5/135mm M42 (Zeiss) has a screw mount that can be used on all lenses with a M42 size. The glass is clear and scratch free. No fungus. Focusing runs smoothly as it should. Shutter works. Some superficial traces of use, but overall neat.
All and all, a very usable lens! Including both lens caps.