This Kind of design has a lengthy history at Patek, relationship back again for the early 1960s Together with the ref. 2597 Travel Time Calatrava. As James Stacey pointed out in his Hands-On with the 5164R in 2019, the movement in the 2597 originated with the brain of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/