Sandoz Swissonic... ¿Un eslabón perdido?

The Sandoz Swissonic "Electronic" is a beautiful and intriguing example of the evolution sparked by the "quartz crisis," which led to the adaptation of new options to the watchmaking industry and transformed into a true technological revolution. Proof of this is this watch with an ESA 9154 Dynotron movement, produced from 1970 to 1975, featuring an electronically controlled balance wheel with a frequency of 28,800 A/h. A remarkably accurate watch for its time, despite its internal appearance. This technology was developing alongside others, such as the tuning fork Accutron and the first quartz watches, which eventually displaced the competition. And even with its relatively short time in the industry (5 years), it was commonly used by established and renowned brands. Without further ado, I leave you with this example of what I like to see as another link in the chain of the commercial watchmaking industry...