This Sort of style has a protracted history at Patek, dating again towards the early sixties Together with the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Hands-On with the 5164R in 2019, the movement while in the 2597 originated through the brain of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/