Mamiya Auto Sekor 50mm f2 Prime Lens for M42 Screw Mount
This is a high quality m42 lens in excellent condition. It would be a great standard lens on a classic m42 kit or adapted to mirrorless.
It is in great shape with light wear. There are some light cleaning marks on the front element that will not affect image quality. Otherwise, the glass is clean and scratch-free and everything works perfectly. The focus is slightly stiff but still very usable.