This Sort of style has a protracted background at Patek, courting back for the early sixties Together with the ref. 2597 Travel Time Calatrava. As James Stacey described in his Fingers-On Together with the 5164R in 2019, the motion in the 2597 originated from the brain of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/