Such A style has a long record at Patek, relationship again into the early sixties with the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Arms-On with the 5164R in 2019, the motion within the 2597 originated through the intellect of Louis Cottier – The daddy from https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/