Vacheron Constantin Patrimony Perpetual Calendar

About this reference

The Vacheron Constantin Patrimony Perpetual Calendar reference 43175 in 18k rose gold was introduced in the early 2010s and remains a cornerstone of the brand’s high-complication catalog. Collectors prioritize this reference for its ultra-thin profile, measuring 8.9mm thick, which houses the caliber 1120 QP. This movement is based on the Jaeger-LeCoultre 920 ebauche, a historically significant caliber used by the "Holy Trinity" of watchmaking. The 41mm case features a minimalist opaline dial with applied gold hour markers and a moon phase disk made of 18k gold. On the secondary market, this reference typically trades between $55,000 and $75,000 depending on condition and the inclusion of original accessories. A notable production detail is the transition from the Geneva Seal stamped on the movement bridges to the updated Poinçon de Genève standards, which evaluate the entire finished timepiece for chronometric accuracy and finishing.