{"reference": {"slug": "hublot-419", "brand": "Hublot", "ref": "419", "model": "Big Bang Tourbillon Only Watch", "case_material": "Polished Sapphire", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/hublot-419", "description": "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."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "hublot-419-jx-0120-rt-owm21-2021", "brand": "Hublot", "reference": "419.JX.0120.RT.OWM21", "model": "Big Bang Tourbillon Only Watch", "case_material": "Polished Sapphire", "hammer_usd": 348800, "year_sold": 2021, "venue": "Christie's Geneva", "lot_summary": "A unique piece created for the Only Watch 2021 charity auction, featuring a transparent and orange sapphire case and an automatic manufacture tourbillon movement.", "source_url": "https://www.christies.com/en/lot/lot-6338515", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/hublot-419-jx-0120-rt-owm21-2021"}]}