Vacheron Constantin Traditionnelle Perpetual Calendar Ultra-Thin 43175/000P-B190

About This Watch

The Vacheron Constantin Traditionnelle Perpetual Calendar Ultra-Thin in platinum represents the ultimate expression of the maison's ultra-thin perpetual calendar concept within its most classically styled collection. The platinum case adds gravitas — literally, as platinum is denser than gold — while the deep blue dial creates a striking contrast against the platinum's cool grey tones. The caliber 1120 QP remains one of the thinnest perpetual calendar movements ever made, enabling the extraordinary 8.9mm case thickness that makes this grand complication feel like a dress watch on the wrist. The perpetual calendar mechanism tracks day, date, month, moon phase, and leap year, requiring no date correction until 2100. The Traditionnelle design language adds refined details including a fluted case middle, applied hour markers, and Dauphine hands that distinguish it from the more austere Patrimony. The platinum execution positions this at the summit of the range, appealing to collectors who appreciate the understated density and prestige of the noble metal combined with one of watchmaking's most intellectually satisfying complications.