Vacheron Constantin Patrimony Perpetual Calendar Chronograph

About this reference

The Vacheron Constantin Patrimony Perpetual Calendar Chronograph reference 49005 was produced from approximately 1992 until the early 2000s. Collectors target this reference as the brand’s first automatic perpetual calendar chronograph, marking a significant technical transition for the manufacture. The 38mm 18k yellow gold case houses the caliber 1136 QP, which is based on the Frédéric Piguet 1185 integrated chronograph movement. The dial features four sub-dials, including a moon phase at 6 o'clock and a leap year indicator integrated into the month register at 12 o'clock. Production numbers were limited, with estimates suggesting fewer than 500 units were made in yellow gold. On the secondary market, this reference typically trades in the $35,000 to $50,000 range. A notable variant is the platinum version with a blue dial, which commands a significant premium over the yellow gold models at auction.