Meyer-Optik Gorlitz Oreston 50mm F1.8 M42 Screw Mount Prime Lens -Clean-
This is a nice 50mm made by the East German competitor to Zeiss, Meyer-Optik, who was later merged into Zeiss itself. You should look up some sample images from this lens, I think that you'll be impresed. It has beautiful bokeh and is nice and sharp stopped down.
It is in excellent condition with light wear and works perfectly. The glass is clean and scratch-free with no haze, fungus or other problems. The focus is smooth and the aperture is dry and snappy.
A front cap is included.