Lens Mir-1B ( Mir-1, 1V ) 2.8/37мм M42 WIDE ANGLE LENS 

Good condition, free of scratches.

Made in USSR

Serial number: 88002829

Specifications:

 -Focal length: 37mm

- Frame size: 24*36mm

 -Maximum aperture: 2

 -Minimum aperture: 16

 -Number of lenses/groups: 6/5

 -Minimum focusing distance: 0.7 m

 -Resolution center/edge: 45/23 lines / mm

 -Number of diaphragm lobes: 10

 -Type of illumination: MC

 -Mount: M42

 -Weight: 250 g ( 0,44 lb)