This Sort of layout has a lengthy record at Patek, relationship again to your early sixties Together with the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Fingers-On Along with the 5164R in 2019, the motion during the 2597 originated within the mind of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/