Cameras Smena were produced by factory "GOMZ" ("LOMO") since 1953 up to 1960 and by factory "MMZ" (Minsk) in 1958.
Film accept: 35mm
Frame size 24X36mm
Shutter speed - 1/10, 1/25,1/50, 1/100, 1/200, "B".
Lenses: T-22, Diafragm: 4,5-16 (Sovietcams.com)
Also variants with red text on lens and black lens & front plate.