Subscriber loudspeaker `` KZRA '' (0.25 GD-III-4).
Subscriber loudspeakers.DomesticThe subscriber loudspeaker "KZRA" (0.25 GD-III-4) was produced presumably since 1955. "KZRA" is a conditional name, apparently it is a manufacturer. The design of the AG is similar to the Oka loudspeaker of the Gorky Plastic Products Plant, 1953.
