This Sort of structure has a lengthy record at Patek, courting again to your early 1960s Together with the ref. 2597 Travel Time Calatrava. As James Stacey described in his Fingers-On Along with the 5164R in 2019, the movement while in the 2597 originated in the intellect of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/