Such A structure has an extended history at Patek, courting back again to the early sixties Along with the ref. 2597 Travel Time Calatrava. As James Stacey talked about in his Palms-On with the 5164R in 2019, the motion within the 2597 originated from the mind of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/