LOMO Round Front Anamorphic lens 5.6/500mm 35BAS14-1

Round front anamorphic lens 35BAS14-1 made at LOMO in 1972 (#720001). Seems to be quite rare. Having first of them, I don't know how many were made.

OCT-18 mount. Can be converted to PL or OCT-19 for extra $150.