OKS (RO) LOMO Vintage for Soviet Camera ZASADA set 4 PCS. This lens was used on rare Russian spy camera Zasada. There are 4 lenses in the set - 35, 50, 85, 135mm. They are purposed for special Soviet spy outfit "ZASADA" that means'ambush' in Russian. Diaphragm is here, but no aperture control ring - it is designed to be controlled from inside of a camera by a pin.
The lens has collector value, but can be used for actual shots, of course. The lens can be installed through an adapter on any camera.
For example, you can see in photos 2 and 3. The Lens is in Good Condition. Glass ...