LOMO 2/28mm lens OKS7-28-1 with TEMP mount and Arri PL adapter, #810234
The lens comes in TEMP mount with Arri PL adapter over it.
The prime was made in 1981 (s/n 810234). f/2, T/2.3, focuses from 0.5m.
Appearance is excellent.
Aperture ring works fine. Diaphragm blades are clean and dry.
Focus ring moves smoothly, with even effort at the whole range.
Glass is clean and clear outside. But there are some tiny scratches near center and glue crystallization near edges visible when you looking through the lens from rear. These issues will not affect image quality, most probably.
More complex issue is focus breathing - about 10 degrees.