Optical blocks OKS2-100-2 were purposed for 70mm film originally, but some of them have been housed for OCT-19 mount of 35mm cine cameras (Konvas and Kinor).
So, the lens uses central part of the image therefore (where aberrations are less).
Glass is fine. No fungus, no scratches, no cleaning marks. Just a few tiny dust particles.
Mechanics has some play. I didn't notice effect on focus though.
Body has signs of use (paint chips, mainly).
The original OKS2-100-2 lens was placed into new housing that makes it more suitable for typical work. Commonly used Arri PL mount. Industry standard 32 pitch follow focus gear. M77x0.75 filter thread for 77mm filters.