I just bought and tested a Kiev 30. I bought it via Ebay from Ukraine. It was NOS (new old stock).
The internet sources say that the Kiev 30 was built between 1974 and 1983 by the Asenal factory. Its sucessor, the Kiev 30M, built until the end of the 80s, was a slightly simplified version. The 30M was succeeded by the 303, which is mainly the same camera with more plastic, built throughout the 90s. Looking at the camera bought, I'm not sure about the dates. My Kiev 30 suggests a 1990 production date.