Such A style and design has a lengthy background at Patek, dating again towards the early sixties Together with the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Fingers-On While using the 5164R in 2019, the movement inside the 2597 originated with the mind of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/