This perfect lens specially designed for military or industrial purposes, have flow focus and flow aperture control.

New condition: glass is clear, no scratches, no fungus, no dust, no haze, no separations, no scratches, no marks.

Flow focusing and aperture movies easy.

Optical part have standard dimensions as all other Mir-1, also possible

remove from helicoid and replace to standard m42  mount

Comes with front cap..