This Sort of structure has a long historical past at Patek, dating again for the early sixties While using the ref. 2597 Travel Time Calatrava. As James Stacey stated in his Arms-On Along with the 5164R in 2019, the movement during the 2597 originated in the mind of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/