This Type of design and style has an extended history at Patek, relationship back on the early 1960s Using the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Fingers-On with the 5164R in 2019, the movement while in the 2597 originated through the head of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/