This Type of layout has an extended historical past at Patek, dating back again into the early sixties with the ref. 2597 Travel Time Calatrava. As James Stacey stated in his Palms-On With all the 5164R in 2019, the movement from the 2597 originated with the intellect of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/