This Sort of style and design has a protracted background at Patek, courting back to your early 1960s Using the ref. 2597 Travel Time Calatrava. As James Stacey described in his Fingers-On Using the 5164R in 2019, the motion inside the 2597 originated with the thoughts of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/