This Sort of design has an extended history at Patek, dating again towards the early nineteen sixties with the ref. 2597 Travel Time Calatrava. As James Stacey talked about in his Hands-On with the 5164R in 2019, the movement during the 2597 originated from your brain of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/