Cameras Kiev-4A were produced by factory "Arsenal" (Ukraine) since 1958 up to 1980.
Frame size 24X36mm

Shutter speeds: 1/2, 1/5, 1/10, 1/25, 1/50, 1/125, 1/250, 1/500, 1/1250(or 1/1000) of a second and "B".
Main differences from Kiev-2: The back part and body is upgraded

Lenses: Jupiter-8M (2/50mm)
Lenses for Kiev-4A are here