The most popular camera manufactured by KMZ with huge 3.334.540 total production.
Basically a Zenit-V = B is a cheaper version of E without the selenium cell exposure meter.
Cameras befroe spring 1967 had the old ZM39-mount, later ones with M42-thread. No aperture control between camera and lens, so only manual and preset lenses can be used.
Camera in picture is an olympic model with a genious repair of sel timer: lever has been removed and hole covered with leatherette! Produced in 1978 so already two years before the event.