35mm lens OKS11-35-1, OCT-19 mount for Konvas, Kinor
The lens comes in OCT-19 mount for Konvas-2M, Kinor-35. May be it will fit RED, Canon EOS or other digital cameras, video cameras or DOF systems if you have corresponding adapter. At least, it fits LEX and RedRock Micro M2 adapters, so I believe that it should fit most of other too.
The prime was made in 1985 (s/n 850124). f/2, T/2.3, focuses from 0.5m.
The lens is quite used - you can see obvious signs of wear.
Aperture ring works fine. Focus ring works smoothly, with even effort to turn in the whole scale range.
Glass has no fungus or scratches, but there are some cleaning marks and dust (even some dirt) inside. Someone didn't clean it after diassembling, probably. So, the lens requres some cleaning.