Lens Vega-11U 3 / 54 (intended for small-format photo enlargers with a frame size of 24x36 mm.
Five-lens anastigmatism (5 lenses in 4 groups). The resolution of the lens is 70/40 lines/mm
(according to other data - 71/39). Connecting thread M39X1.
The lens is clean, everything runs smoothly. Also, keep in mind that I did not test it because I do not have the equipment to connect it and check it. But for the collection, I think it is a good thing in excellent external condition.