Nikon Helios-44M KMZ 58mm f/2 №7813371 Nikon F-mount

 The flange focal distance of this lens has been changed to 46.5mm without changing the optical properties. Infinity is available on cameras with Nikon F-mount.  Restored using modern lubricants. The glass is washed with Zeiss products inside and out. The ends of the glass were blackened to enhance the contrast of the lens. Better than new