This Sort of design has a long heritage at Patek, relationship back to your early 1960s Together with the ref. 2597 Travel Time Calatrava. As James Stacey talked about in his Hands-On With all the 5164R in 2019, the motion inside the 2597 originated from the head of Louis Cottier https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/