Jupiter-37A.

The Jupiter-37A has a maximum aperture of f/3.5 and a focal length of 135 mm. It has an M42 screw mount. It was manufactured by KOMZ in Kazan. It was supplied complete with a lens hood and caps in a fitted hard plastic case. This particular lens was made in 1980 and the lens barrel and case are marked with the Moscow Olympic logo.

David Tomlinson.