The existence of a Russian transistorised tuning fork watch 'Kammertoni' cal. 2937, produced
by The First Moscow Watch Co. or by Slava has also been recorded. At first, the production
of the delicate ratched wheel with its 360 teeth was not very successful, in Moscow. After a
considerable amount of time, it turned out that the vibrations of the Moscow Underground
caused the problems. A manufacturing plant outside Moscow was the solution.
My appreciation goes to the chief of the research department of Ruhla, G/nther Krug, who
provided me with this information.
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