>>There should be a Qualitätszeichen/Quality stamp on the left side of the aft lug on the tubeset. @ this time the Suhl mechanics had exhausted their supply of components and were all but forced to make something out of thin air as those in control were supplying them w/ inferior raw materials, which was the beginnings of a revolt. 1953 saw Russia take full economic control of Suhl & then in September 1955 the mechanics of Suhl were supplied w/ the Izhevsk crucible steel grade 50A as a new/better steel.<<
Some say the 50A doesn't exist....
Serbus,
Raimey
rse
