This Sort of design has a long history at Patek, relationship back again for the early sixties Together with the ref. 2597 Travel Time Calatrava. As James Stacey pointed out in his Fingers-On Along with the 5164R in 2019, the motion within the 2597 originated with the thoughts of Louis https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/