Such A structure has a lengthy record at Patek, dating back again towards the early nineteen sixties Along with the ref. 2597 Travel Time Calatrava. As James Stacey pointed out in his Palms-On with the 5164R in 2019, the movement inside the 2597 originated through the brain of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/