This Type of design has an extended background at Patek, courting back for the early 1960s With all the ref. 2597 Travel Time Calatrava. As James Stacey talked about in his Palms-On Using the 5164R in 2019, the motion inside the 2597 originated through the intellect of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/