Soviet Cine lens OKC1, 50mm f2.0

It is a very rare Soviet cine lens, predecessor of OKC1-50-1. It has an M42 mount that works on Sony A7 with the slim adapter. It covers APS-C sensor (25X17mm). The helicoid is original. The glass is basically clean and transparent. There are very few dust particles inside. I do not see cleaning marks, or just only few that can be barely seen. There is no scratches or haze. There is no oil on the aperture blades (there are 8 blades). The focus ring is smooth an easy. The aperture ring works normally with nice clicks. The lens is very sharp and contrasty with nice tonal transitions and with a unique bokeh at close distances. The lens hood is build in. I sell it as I need to invest to other systems, and to reduce my collection of lenses. There is nothing wrong with the lens itself. I ask the average Ebay price for this lens in this condition. Please, see my other announcements.To see high-quality pics: search "eugene tp flickr" and click "albums”.