The PRIM Context
PRIM grew from the same national horological project that developed Chronotechna. Domestic watch production began in the 1950s, eventually giving the PRIM name broad recognition across Czechoslovak timekeeping.
Gambit
The Gambit chess clock is described as a Chronotechna design later appearing under PRIM. Production is reported from the early 1960s, and surviving clocks with the older PRIM logo must predate 1969.
German Branding
Jerger-branded Gambits appear to reflect cooperation or distribution rather than a takeover of PRIM. That relationship reportedly ended around 1970. A much rarer Hanhart version appeared in the 1980s as Chronotechna struggled.
Historical Significance
Gambit shows how a Czechoslovak state product could acquire foreign commercial identities while remaining rooted in the same underlying design and manufacturing tradition.