The Zenit-B is similar to the Zenit-E, but does not have the built-in meter.
Produced: 1968-1973
Name: „Зенит-B“
Producer: KMZ
Frame size: 24x36.
Lens: Industar-50-2 3.5/50.
Shutter: 1/30s-1/500s + B.
Quantity: 889.000 units. (Sovietcams.com)