This Sort of style and design has a long historical past at Patek, relationship back again into the early sixties with the ref. 2597 Travel Time Calatrava. As James Stacey pointed out in his Fingers-On While using the 5164R in 2019, the movement in the 2597 originated in the intellect https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/