This Type of structure has a long history at Patek, relationship again to the early sixties with the ref. 2597 Travel Time Calatrava. As James Stacey pointed out in his Palms-On While using the 5164R in 2019, the motion during the 2597 originated from the brain of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/