This Type of structure has a lengthy record at Patek, courting again to the early sixties Together with the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Palms-On While using the 5164R in 2019, the motion in the 2597 originated in the brain of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/