Vacheron Constantin Patrimony Retrograde Day-Date Ref. # 4000U/000R-B516Discover unparalleled elegance with the unworn Vacheron Constantin Patrimony Retrograde Day Date, Ref. # 4000U 000R B516, a 42. 50 mm marvel that marries tradition with innovation. Boasting a captivating Blue Dial, this timepiece is a symphony of sophistication and style. Encased in the warmth of Pink gold, the 42. 50 mm case houses the self winding Caliber # 2460 R31R7 2, adorned with 27 Jewels, ensuring precision and reliability with a commendable