*SERVICED* Helios 44-3 Belomo MMZ f2 58mm M42 (w Belomo front and rear caps)
Unlike the 44-2, it has multi-coated optics (hence the "MC" on the front ring) and is thus sharper and has better contrast than the 44-2, while retaining the swirly bokeh characteristic that the 44-2 is famous for.