MC HELIOS-44M-6 58mm f2 Portrait Lens SLR DSLR M42 Mount Monster Bokeh Biotar
MC Helios-44M-6 58mm f/2 Lens - M42 Mount. Mount Type: M42 screw mount. Focal Length: 58mm. Lens Coating: Multi-coated (MC) for improved contrast. This lens was made in USSR in 1991, its serial number 91469910.