This Type of design has a lengthy heritage at Patek, dating again to your early sixties With all the ref. 2597 Travel Time Calatrava. As James Stacey talked about in his Fingers-On Using the 5164R in 2019, the movement in the 2597 originated within the mind of Louis Cottier – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/