This Sort of layout has a protracted historical past at Patek, courting back to your early 1960s with the ref. 2597 Travel Time Calatrava. As James Stacey pointed out in his Hands-On With all the 5164R in 2019, the movement from the 2597 originated from your mind of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/