LOMO lens OKS8-35-1 2/35mm, T/2.2, Konvas OCT-18 mount, #723507
The lens was made at LOMO in 1972 (#723507). F=35mm, f/2, T/2.2.
Mount is so called OCT-18 - for Russian 35mm film movie cameras Konvas-1M.
You can use it on other cameras if you have corresponding adapter.
Aperture ring is decoupled from diaphragm mechanism (lens is fully open not matter what aperture setting you choose) - some repair required.
Glass is clean and clear. Tiny glass chip on the front element (about 0.5 mm)