This Type of structure has a lengthy background at Patek, relationship back again towards the early sixties Together with the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Palms-On Along with the 5164R in 2019, the motion during the 2597 originated in the head of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/