This Type of style and design has a protracted background at Patek, relationship again for the early 1960s Using the ref. 2597 Travel Time Calatrava. As James Stacey described in his Palms-On with the 5164R in 2019, the motion inside the 2597 originated within the head of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/