This Kind of design and style has an extended background at Patek, dating again into the early nineteen sixties With all the ref. 2597 Travel Time Calatrava. As James Stacey pointed out in his Fingers-On Using the 5164R in 2019, the movement while in the 2597 originated from your brain https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/