{"reference": {"slug": "breguet-1039", "brand": "Breguet", "ref": "1039", "model": "Triple Calendar", "case_material": "18k Yellow Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/breguet-1039", "description": "The Breguet Reference 1039 is a mid-century triple calendar wristwatch produced in limited quantities during the 1950s and 1960s. Collectors prioritize this reference for its 36mm 18k yellow gold case, which features the brand’s signature coin-edge fluting and straight lugs. The dial typically displays a hand-guilloché center, Roman numerals on a brushed chapter ring, and apertures for the day and month, powered by a manual-wind Valjoux-based caliber. This reference represents the neo-classical aesthetic established by the house before the quartz crisis. On the secondary market, these timepieces generally command prices between $35,000 and $60,000 depending on provenance and condition. A notable example appeared at a 2017 Christie’s auction, where a well-preserved specimen sold for approximately $47,500. Production numbers remained low, as Breguet’s total annual output during this era was significantly more restricted than modern production levels."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "breguet-1039-2016", "brand": "Breguet", "reference": "1039", "model": "Triple Calendar", "case_material": "18k Yellow Gold", "hammer_usd": 140000, "year_sold": 2016, "venue": "Christie's Geneva", "lot_summary": "An exceedingly rare vintage triple calendar wristwatch with moon phases and a unique 'doré rose' champagne dial, one of only five known examples.", "source_url": "https://www.christies.com/en/lot/lot-5991039", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/breguet-1039-2016"}]}