{"reference": {"slug": "jaeger-lecoultre-q1646420", "brand": "Jaeger-LeCoultre", "ref": "Q1646420", "model": "Duomètre à Sphérotourbillon", "case_material": "Platinum", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/jaeger-lecoultre-q1646420", "description": "The Jaeger-LeCoultre Duomètre à Sphérotourbillon reference Q1646420 was introduced in 2012 as a limited edition of 75 pieces. This platinum model features the manual-wind Calibre 382, which utilizes the Dual-Wing architecture to separate the timekeeping gear train from the complication power supply. Collectors value this reference for its multi-axis tourbillon that rotates every 30 seconds at a 20-degree tilt and its flyback seconds function, which allows for precise synchronization to a reference clock via a pusher at 2 o'clock. The 42mm case houses a silvered grained dial with a 24-hour GMT subdial and dual power reserve indicators. On the secondary market, this reference typically trades in the $130,000 to $170,000 range depending on condition and provenance. A notable production detail is that the movement plates and bridges are crafted from untreated German silver, a hallmark of the high-end Duomètre series."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "jaeger-lecoultre-q1646420-2017", "brand": "Jaeger-LeCoultre", "reference": "Q1646420", "model": "Duomètre à Sphérotourbillon", "case_material": "Platinum", "hammer_usd": 106250, "year_sold": 2017, "venue": "Phillips Geneva", "lot_summary": "A highly complicated modern masterpiece featuring a multi-axis tourbillon and the 'Dual-Wing' movement architecture.", "source_url": "https://www.phillips.com/detail/jaeger-lecoultre/CH080217/96", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/jaeger-lecoultre-q1646420-2017"}]}