The great Swiss tradition of precision watchmaking, combined with a love of the sea and diving, were the two factors that led C. Von Büren to work exclusively on the construction of professional divers watches from the early '50s. Initially the "Squale" mark appeared on the cases of Swiss watches of various makes, as a sign of fine production and a quality symbol. Then, in the '60s, Von Büren started to produce watches that also had the Squale mark on their dials, starting the brand?s institutional and commercial history. The first sporting successes, such as the world diving title won in Cuba in '68, were linked to the names of products that had become as legendary as the medium, Master 50 atm. The '70s saw the birth of the first "1000 metre" watch with glass on flexible mounting and snap-on lunette which could be turned in both directions.Squale continued to produce for other brands and started to supply the elite corps of a large number of armed forces, including the parachutists of Italy's Folgore Brigade and the Italian Navy's Diving Corps.All this has made Squale synonymous with quality and the benchmark brand for divers' watches internationally, a status it has enjoyed for several decades.