A Helios 58mm F2 44M    lens.

In M.42 screw fitting and originally standard equipment on Zenith SLR,s.

But now sought after for use on Digital cameras with an adapter.

The lens is in very good   condition ,  clean optics and free aperture.

These lenses were copies of the Zeiss Biotar , and are suprisingly good.

Lens no. 7521102