This Kind of style has a long historical past at Patek, relationship again towards the early 1960s Together with the ref. 2597 Travel Time Calatrava. As James Stacey described in his Palms-On Together with the 5164R in 2019, the movement inside the 2597 originated in the thoughts of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/