The lens comes in OCT-19 mount for Russian 35mm film movie cameras like Konvas-2M, Kinor-35. Can be used with other cameras if you have corresponding adapter.
The prime was made in 1990 (s/n 900324). f/2, T/2.3, focuses from 0.6m.
The lens is in very good used condition.
Aperture ring works fine. Diaphragm blades are covered with oil.
Focus ring works smoothly, with even effort to turn in the whole scale range. Native 32 pitch follow focus gear is installed.
Glass is not so good. Coating layer is damaged on front and rear elements. Some dirt inside. Image quality may be affected.
The lens has Kinor-style housing with short rear part that makes it possible to adapt it to many systems or convert it to other mount like Arri PL. So, you can buy this lens, replace optical block and get great 50mm lens therefore.