Up for sale is absolutely stunning and rare lens - LOMO G25 100mm f2.0. Originally this lens was made for Soviet Russian 35mm cinema equipment with highest precision and quality control and has common c-mount. This lens is fully covering Full Frame sensor and has good enough back focal flange distance - to be used on DSLR and mirrorless cameras.
This lens was made before well known OKS 100mm and more rare then it.
The lens has amazing classical cinema rendering, creamy smooth bokeh and amazing resolution, so it will serve fantastic as a portrait lens. 
This particular sample was professionally CLAd, placed in custom focusing helicoid and converted with M42 screw mount - to be able to use it with mirrorless, rangefinder (no rangefinder coupling) and SLR cameras. The minimal focusing distance of the lens is about 0.6m, which is fantastic for close portrait shooting.
Now lets talk about the condition of this lens. The lens is basically in amazing condition and has no issues at all! It looks and feels like great with no major flaw I need to mention! 
I'm pretty sure, that it will be ABSOLUTELY NO POSSIBLE to find the same lenses in such a condition now days.
The lens is coming with not original front cap.