Serial number is 7027550, so was made in 1970. This is an Industar-50-2, 3.5/50 mm SLR pancake lens. It was made in the USSR.
Industar-50, 3.5 / 50 mm Lens. 39mm Screw Mount for SLR Lenses 6854335. UK Sale.
Jupiter-8, 2/50 mm Lens. 39mm Screw Mount (LTM) With Caps. No.7318396. UK Sale
Jupiter-8, 2/50 mm Lens. 39mm Screw Mount (LTM) With Caps. No.0171791. UK Sale
Jupiter-8, 2/50 mm Lens. 39mm Screw Mount (LTM) With Caps. No.038559. UK Sale
Canon 2.8 / 50 mm Rangefinder Lens. 39mm Screw Mount (LTM) Caps. 37841. UK Sale
Canon 1.8 / 50 mm Rangefinder Lens. 39mm Screw Mount (LTM) Caps. 243742. UK Sale
