Rolex took on its formal corporate identity on November 15, 1915, when The Rolex Watch Company, Limited was incorporated in London. The date gives Rolex a 24/6 Life Path, a 15/6 day, and Cat Eastern energy. The company carries older layers too. Hans Wilsdorf began the original London watch business in 1905, and the Rolex name was officially registered in Switzerland on July 2, 1908. Those earlier imprints remain part of the lineage, but 1915 marks the point when Rolex became the company name itself.
The Cat imprint produces a remarkable timeline. In 1927, a Cat year, Mercedes Gleitze crossed the English Channel wearing a Rolex Oyster, publicly proving its waterproof design and creating one of the defining marketing moments in Rolex history. In 1931, a Goat year friendly to Cat, Rolex developed the Perpetual rotor that became fundamental to the Oyster Perpetual system.
The friendly pattern continues across generations. Rolex introduced the GMT Master in the Goat year 1955 and the Sea Dweller in another Goat year in 1967. In 1971, a Pig year friendly to Cat, the Explorer II arrived. Another Pig year in 2007 brought major innovations including the Yacht Master II. Then in 2015, another Goat year, Rolex introduced calibre 3255, Oysterflex, and its redefined Superlative Chronometer certification. In 2023, Rolex returned to its own Cat energy with the launch of the Perpetual 1908 collection.
Founder Hans Wilsdorf adds another layer. Born on the 22nd, he carries CUE's Master Builder number, fitting a company whose reputation was constructed around precision, waterproofness, self winding systems, durability, and standards designed to endure.
CUE: Rolex shows why the strongest identity date is not always the earliest date or the first appearance of a brand name. The 1905 company and 1908 trademark remain important foundations, but the November 15, 1915 corporate Rolex identity produces an unusually consistent historical pattern. Own Cat years and friendly Goat and Pig years repeatedly surround some of the company's defining innovations, while Wilsdorf's 22 adds a separate Master Builder imprint behind the systems that made Rolex endure.
