This Kind of structure has a lengthy history at Patek, relationship again to the early 1960s While using the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Palms-On Together with the 5164R in 2019, the motion inside the 2597 originated through the intellect of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/