This Sort of design has a protracted heritage at Patek, dating back towards the early 1960s Along with the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Fingers-On While using the 5164R in 2019, the motion in the 2597 originated in the head of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/