{"reference": {"slug": "jacob-co-at802", "brand": "Jacob & Co", "ref": "AT802", "model": "Astronomia Art Dragon", "case_material": "18k White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/jacob-co-at802", "description": "The Jacob & Co. Astronomia Art Dragon reference AT802.30.DR.UA.A is a piece-unique or highly limited production model introduced around 2018 as part of the Astronomia Art collection. Collectors value this reference for its JCAM25 manual-wind caliber, a gravitational triple-axis tourbillon featuring a four-arm movement that rotates every ten minutes. The 50mm 18k white gold case features monoblock sapphire crystal side windows to display a hand-engraved 18k rose gold dragon that weaves through the movement components. This specific execution includes a 288-facet Jacob-cut diamond and a magnesium globe. On the secondary market, these pieces typically command prices in the mid-to-high six-figure range, often between $600,000 and $800,000 depending on provenance. A notable production detail is that while the movement is standardized, the hand-painted dragon sculpture requires over three months of dedicated engraving and finishing, ensuring no two examples are identical."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "jacob-co-at802-30-dr-ud-a-2023", "brand": "Jacob & Co", "reference": "AT802.30.DR.UD.A", "model": "Astronomia Art Dragon", "case_material": "18k White Gold", "hammer_usd": 381000, "year_sold": 2023, "venue": "Christie's Geneva", "lot_summary": "A unique piece featuring a hand-engraved 24k black-plated gold dragon with ruby eyes, paired with a double-axis tourbillon and a 288-facet Jacob-cut diamond.", "source_url": "https://www.christies.com/en/lot/lot-6451634", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/jacob-co-at802-30-dr-ud-a-2023"}]}