Such A layout has a long record at Patek, relationship back again towards the early sixties Along with the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Fingers-On While using the 5164R in 2019, the movement while in the 2597 originated in the brain of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/