{"query": "3940P", "brand": null, "total": 1, "limit": 10, "matches": [{"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.", "score": 200}]}