SIGNED VACHERON CONSTANTIN, PATRIMONY PERPETUAL MODEL, REF. 43031, CASE NO. 611'752, MANUFACTURED IN 1991

The reference 43031, which is understood to have been in production for around two decades, was the quintessential perpetual calendar model from Vacheron Constantin. It was produced in a range of different configurations, with different metals, dials and bracelet options available, including a striking skeletonised version under the reference 43032.

Nowadays, these pieces stand out as a significant step in helping Vacheron Constantin weather the aftermath of the Quartz Crisis, and help revive the interest in complicated watchmaking. Around 2006, the model was discontinued, leaving way for the manufacture's more contemporary pieces.