Vacheron Constantin 4100U/000R Patrimony 18K Rose Gold Blue Dial 2025

Reference 4100U/000R-B643 is a modern Patrimony in a notably wearable 36 mm case, combining 18K rose gold with a blue dial that gives the collection's 1950s-inspired restraint a slightly more contemporary edge. Introduced in 2020, it sits within one of Vacheron Constantin's cleanest dress watch lines, with a slim bezel, softly curved case profile, and simple baton indexes and hands. Inside is the self-winding caliber 2450 Q6/3, a Geneva Seal movement with center seconds and a date at 6 o'clock. It suits this reference well: the proportions stay elegant, the automatic winding makes daily wear easier, and the date display is integrated without upsetting the dial's symmetry. The sapphire caseback shows the movement's finishing clearly. Collectors are drawn to this reference for a combination that does not come up often in the Patrimony range: compact sizing, rose gold, and a blue dial, rather than the more common silver-toned versions. It is a regular production model, not a boutique or country edition, so its appeal comes from the watch itself, its proportions, materials, and overall execution. For buyers who want a dress watch with a classical profile but a bit more color and flexibility, 4100U/000R-B643 fills that role neatly within the modern Patrimony family. Like New with Vacheron Constantin box and papers dated 2025.