{"reference": {"slug": "patek-philippe-2499", "brand": "Patek Philippe", "ref": "2499", "model": "Perpetual Calendar Chronograph (vintage)", "case_material": "18k Yellow Gold", "url": "https://mostexpensivewatches.net/reference/patek-philippe-2499", "description": "The Patek Philippe Reference 2499 was produced between 1950 and 1985, with a total output of 349 pieces over thirty-five years. Collectors prioritize this reference for its 37.5mm case diameter and the Valjoux-based caliber 13-130 manual-wind movement, which features a perpetual calendar, moon phase, and column-wheel chronograph. The 18k yellow gold version represents the majority of the production run, though it remains scarce compared to modern references. The model is categorized into four distinct series based on dial and case configurations, such as the transition from square to round chronograph pushers and the removal of the tachymeter scale in later iterations. On the secondary market, yellow gold examples typically command prices between $500,000 and over $1,000,000 depending on the series and condition. A first-series 2499 in yellow gold remains particularly sought after due to its flat rectangular pushers and viceroy-style case."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "patek-2499-first-series-yellow-gold", "brand": "Patek Philippe", "reference": "2499", "model": "Perpetual Calendar Chronograph (First Series)", "case_material": "18k Yellow Gold", "hammer_usd": 5661730, "year_sold": 2018, "venue": "Phillips Geneva", "lot_summary": "Early-1950s 'first series' 2499. Square pushers, applied Arabic numerals at 12. One of the most coveted modern Patek references.", "url": "https://mostexpensivewatches.net/auctions/patek-2499-first-series-yellow-gold"}, {"slug": "patek-philippe-2499-2012", "brand": "Patek Philippe", "reference": "2499", "model": "Perpetual Calendar Chronograph", "case_material": "18k Pink Gold", "hammer_usd": 2750760, "year_sold": 2012, "venue": "Christie's Geneva", "lot_summary": "A fresh-to-market first-series example in pink gold, one of only a handful known to exist in this metal and series combination.", "source_url": "https://www.christies.com/en/lot/lot-5561021", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/patek-philippe-2499-2012"}, {"slug": "patek-philippe-2499-2020", "brand": "Patek Philippe", "reference": "2499", "model": "Perpetual Calendar Chronograph", "case_material": "18k Yellow Gold", "hammer_usd": 2740000, "year_sold": 2020, "venue": "Phillips Geneva", "lot_summary": "A second-series example of the iconic reference 2499, distinguished by its round chronograph pushers and tachymeter scale. This piece was consigned from the personal collection of Jean-Claude Biver.", "source_url": "https://www.phillips.com/detail/patek-philippe/CH080120/155", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/patek-philippe-2499-2020"}, {"slug": "patek-philippe-2499-2021", "brand": "Patek Philippe", "reference": "2499", "model": "Perpetual Calendar Chronograph Second Series", "case_material": "18k Pink Gold", "hammer_usd": 2718030, "year_sold": 2021, "venue": "Phillips Geneva", "lot_summary": "A second-series perpetual calendar chronograph in pink gold, one of only eight known with a Wenger case.", "source_url": "https://www.phillips.com/detail/patek-philippe/CH080121/164", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/patek-philippe-2499-2021"}, {"slug": "patek-philippe-2499-2024", "brand": "Patek Philippe", "reference": "2499", "model": "Perpetual Calendar Chronograph", "case_material": "18k Yellow Gold", "hammer_usd": 2590000, "year_sold": 2024, "venue": "Sotheby's Geneva", "lot_summary": "A third-series Ref. 2499 featuring a rare black lacquer dial with Breguet numerals, setting a record for this specific configuration.", "source_url": "https://www.sothebys.com/en/buy/auction/2024/treasures-of-time/third-series-reference-2499-a-yellow-gold", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/patek-philippe-2499-2024"}, {"slug": "patek-philippe-2499-2013", "brand": "Patek Philippe", "reference": "2499", "model": "Perpetual Calendar Chronograph", "case_material": "18k Pink Gold", "hammer_usd": 2186081, "year_sold": 2013, "venue": "Christie's Geneva", "lot_summary": "An exceptionally rare pink gold example from 1951, featuring the first-series dial with square chronograph pushers.", "source_url": "https://www.christies.com/en/lot/lot-5739502", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/patek-philippe-2499-2013"}]}