Hublot Big Bang Tourbillon Only Watch

About this reference

The Hublot Big Bang Tourbillon Only Watch 2021 (Reference 419.JX.0108.RT.OW21) is a unique piece produced specifically for the 2021 Only Watch charity auction. Collectors prioritize this reference for its transparent 45mm case constructed from polished sapphire and its orange-tinted sapphire components, including the bridges of the manufacture HUB6035 automatic tourbillon movement. The caliber features a micro-rotor visible at the 12 o’clock position and a power reserve of 72 hours. As a unique piece, it is not in serial production. While the retail estimate was significantly lower, the watch achieved a final hammer price of 320,000 CHF at the Christie’s Geneva auction in November 2021. On the secondary market, such unique sapphire tourbillons typically command prices in the mid-to-high six-figure range, though availability is restricted by its one-of-one status. This reference represents Hublot’s technical focus on material transparency and integrated movement architecture.