This Type of design has a long background at Patek, dating back again towards the early sixties While using the ref. 2597 Travel Time Calatrava. As James Stacey stated in his Palms-On Together with the 5164R in 2019, the movement inside the 2597 originated from the mind of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/