LOMO lens OKS8-35-1 2.5/35mm, T/2.7, Konvas OCT-18 mount, #733304
The lens was made at LOMO in 1973 (#733304). F=35mm, f/2.5, T/2.7.
Mount is so called OCT-18 - for Russian 35mm film movie cameras Konvas-1M.
The lens has special housing to be coupled with front anamorphic attachment.
Glass is clean and clear. Aperture works fine.