This Type of design has a lengthy background at Patek, courting back on the early sixties with the ref. 2597 Travel Time Calatrava. As James Stacey pointed out in his Fingers-On Using the 5164R in 2019, the movement within the 2597 originated within the thoughts of Louis Cottier – The https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/