This Type of design has a lengthy history at Patek, dating back again towards the early sixties Together with the ref. 2597 Travel Time Calatrava. As James Stacey outlined in his Palms-On Using the 5164R in 2019, the motion during the 2597 originated from your head of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/