This Kind of design has a lengthy historical past at Patek, dating back on the early 1960s Along with the ref. 2597 Travel Time Calatrava. As James Stacey pointed out in his Fingers-On Using the 5164R in 2019, the motion in the 2597 originated within the intellect of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/