The models fitted with the Valjoux 23 caliber are the third representatives of the Chronomaster dynasty (after the Venus 210 and the Valjoux 92). Such a purpose is accurately reflected in the model’s name: CHRONOMASTER AVIATOR SEA DIVER, which suggests a clientele of professional racing drivers, pilots and divers, as well as the multiple functions evoked in the advertising of the 1960s: THE WORLD’S BUSIEST WATCH – HAS MORE USES THAN EVER COUNTED. It in fact had an astonishing number of functions.

The Chronomaster was a Super-Chronograph.

For this reason, despite Chronomaster models originated from Nivada, we can consider Croton as an independent brand. It also commercialised Chronomaster model versions that were not available by Nivada. Pay attention that Croton had its own references and names on the dial and on the movements. The Chronomaster model was first imported with the name association Croton Nivada Grenchen, then with the name Croton only. Croton was the US importer of Nivada watches since the 1930s.

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