A Prague Watchmaster
Josef Voda produced the finished chess clock using Chronotechna movements, probably in the late 1940s or early 1950s.
Documented Commercial and Tournament Use
The clock was advertised in Československý šach in 1948 and appears in tournament use at Tatranská Lomnica in 1950. A surviving example carries a sport-club stamp from the Ministry of Industry.
A Bridge Between Systems
Voda's role appears to have been assembly or finished-clock production, while Chronotechna supplied the mechanical base. This is exactly the kind of hybrid structure expected during the transition from private workshops to state industry.
Historical Significance
The clock turns postwar industrial reorganization into an object-level story: new state movements could flow into small specialized chess products before full standardization took hold.