{"reference": {"slug": "patek-philippe-3940p", "brand": "Patek Philippe", "ref": "3940P", "model": "Perpetual Calendar (Platinum Anniversary)", "case_material": "Platinum", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/patek-philippe-3940p", "description": "The Patek Philippe Reference 3940 was produced from 1985 to approximately 2007, serving as the brand's flagship perpetual calendar for over two decades. Collectors prioritize this reference for its ultra-thin 36mm case and the Caliber 240 Q, a self-winding movement featuring an off-center 22k gold micro-rotor. The platinum 3940P variant is distinguished by its solid case back and a small diamond set between the lugs at 6 o’clock, a hallmark of the metal. The dial layout utilizes three sub-dials to display the day, month, leap year, 24-hour cycle, and moon phase. On the secondary market, the 3940P typically trades between $65,000 and $95,000 depending on the series and provenance. A notable production detail includes the transition from the early \"sunken\" sub-dials of the first series to the flatter registers found in later iterations, which significantly impacts individual valuation."}, "listing_stats": {"count": 3, "median": 52500.0, "low": 48500.0, "high": 65000.0, "brands": 1, "merchants": 1}, "listings": [{"id": "h_6786358476883", "title": "Patek Philippe 3940P | Platinum", "brand": "Patek Philippe", "model": "3940P | Platinum", "reference": "3940P", "price_usd": 65000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Platinum", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Perpetual Calendar"], "merchant_slug": "a-collected-man", "merchant_name": "A Collected Man", "image_url": "https://cdn.shopify.com/s/files/1/0606/5325/products/Patek_Philippe_3940P_Platinum_A_Collected_Man_London_CANPT_P1570_09.jpg?v=1655456198", "detail_url": "https://mostexpensivewatches.net/listing/h_6786358476883", "buy_url": "https://mostexpensivewatches.net/out/h_6786358476883", "available": false}, {"id": "h_6592113999955", "title": "Patek Philippe 3940P | Platinum", "brand": "Patek Philippe", "model": "3940P | Platinum", "reference": "3940P", "price_usd": 52500.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Platinum", "case_size_mm": 36.0, "movement": "Automatic", "complications": [], "merchant_slug": "a-collected-man", "merchant_name": "A Collected Man", "image_url": "https://cdn.shopify.com/s/files/1/0606/5325/products/Patek_Philippe_3940_Platinum_Anthracite_A_Collected_Man_London_9_5e49b726-6a16-4696-b57c-57edf5586fc4.jpg?v=1629099058", "detail_url": "https://mostexpensivewatches.net/listing/h_6592113999955", "buy_url": "https://mostexpensivewatches.net/out/h_6592113999955", "available": false}, {"id": "h_7117907066963", "title": "Patek Philippe Perpetual Calendar | 3940 | Second Series | Yellow Gold", "brand": "Patek Philippe", "model": "Perpetual Calendar | 3940 | Second Series | Yellow Gold", "reference": "3940", "price_usd": 48500.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "18k Yellow Gold", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Perpetual Calendar"], "merchant_slug": "a-collected-man", "merchant_name": "A Collected Man", "image_url": "https://cdn.shopify.com/s/files/1/0606/5325/files/c5406fbe6eb152ff59c451b150afeadb.jpg?v=1702463195", "detail_url": "https://mostexpensivewatches.net/listing/h_7117907066963", "buy_url": "https://mostexpensivewatches.net/out/h_7117907066963", "available": false}], "auction_lots": [{"slug": "patek-3940g-platinum-anniversary", "brand": "Patek Philippe", "reference": "3940P", "model": "Perpetual Calendar (Platinum Anniversary)", "case_material": "Platinum", "hammer_usd": 1810000, "year_sold": 2021, "venue": "Phillips Hong Kong", "lot_summary": "Limited platinum 3940 made for Patek's 150th anniversary. Standard 3940 trades in the $80k-$120k range.", "url": "https://mostexpensivewatches.net/auctions/patek-3940g-platinum-anniversary"}]}