The lens was made at LOMO in 1974 (#740045). F=35mm, f/2, T/2.2.
Mount is so called OCT-18 - for Russian 35mm film movie cameras Konvas-1M.
OCT-18 to Arri PL adapter is installed ($174 value).
The lens shows signs of use. Aperture ring works fine (clicked).
Focus ring moves smoothly.
Glass is clean and clear.