Such A style has a long history at Patek, dating back for the early sixties with the ref. 2597 Travel Time Calatrava. As James Stacey described in his Arms-On with the 5164R in 2019, the movement within the 2597 originated from your brain of Louis Cottier – The daddy in https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/