Such A style has a long record at Patek, courting again for the early 1960s with the ref. 2597 Travel Time Calatrava. As James Stacey described in his Fingers-On with the 5164R in 2019, the motion in the 2597 originated within the head of Louis Cottier – the father on https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/