This Type of style has a protracted record at Patek, relationship back for the early sixties With all the ref. 2597 Travel Time Calatrava. As James Stacey pointed out in his Fingers-On Along with the 5164R in 2019, the movement inside the 2597 originated with the mind of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/