This Type of layout has an extended background at Patek, relationship back for the early 1960s While using the ref. 2597 Travel Time Calatrava. As James Stacey stated in his Fingers-On Together with the 5164R in 2019, the motion during the 2597 originated through the mind of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/