This Type of style has a lengthy historical past at Patek, relationship back on the early 1960s Using the ref. 2597 Travel Time Calatrava. As James Stacey mentioned in his Palms-On Along with the 5164R in 2019, the movement during the 2597 originated with the intellect of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/