{"reference": {"slug": "iwc-3751", "brand": "IWC", "ref": "3751", "model": "Da Vinci Rattrapante", "case_material": "18k Yellow Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-3751", "description": "The IWC Da Vinci Rattrapante reference 3751 was produced from approximately 1995 through the early 2000s and is no longer in production. Collectors value this reference for its integration of a perpetual calendar and a split-seconds chronograph within a 39mm 18k yellow gold case featuring hinged lugs. It utilizes the caliber 79251, which is based on a Valjoux 7750 modified with Richard Habring’s simplified rattrapante module and Kurt Klaus’s synchronized calendar system. The dial includes a four-digit year indicator, a moon phase, and four sub-dials. On the secondary market, this reference typically trades between $12,000 and $18,000 depending on the presence of the original box and papers. A notable production detail is that the perpetual calendar is programmed to function until 2499, though the century slide must be replaced by a watchmaker when the year 2100 arrives."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "iwc-3751-2016", "brand": "IWC", "reference": "3751", "model": "Da Vinci Rattrapante", "case_material": "18k Yellow Gold", "hammer_usd": 9375, "year_sold": 2016, "venue": "Christie's New York", "lot_summary": "A highly complicated perpetual calendar chronograph with a split-seconds function, notable for having all functions set via the crown.", "source_url": "https://www.christies.com/en/lot/lot-5983748", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/iwc-3751-2016"}]}