Tudor Was launched in 1926 by none besides Hans Wilsdorf, founding father of Rolex. Wilsdorf planned to launch a brand that had the exact same standing for toughness and precision as Rolex—but was more present-day in its outlook. The purple Alpina logo was influenced by the Matterhorn mountain in Switzerland. https://www.watchesworld.com/a-history-of-watch-reference-numbers/