This Type of style has a long history at Patek, relationship back again to the early nineteen sixties with the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Palms-On Together with the 5164R in 2019, the movement inside the 2597 originated in the head of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/