{"reference": {"slug": "patek-philippe-5905p-annual-calendar-chronograph", "brand": "Patek Philippe", "ref": "5905P-001", "model": "Annual Calendar Chronograph", "case_material": "Platinum", "url": "https://mostexpensivewatches.net/reference/patek-philippe-5905p-annual-calendar-chronograph", "description": "The Patek Philippe 5905P-001 was introduced in 2015 as a platinum successor to the 5960 series and remained in production until its discontinuation around 2021. This reference is valued for combining a flyback chronograph with an annual calendar, powered by the in-house self-winding Caliber CH 28-520 QA 24H. The 42mm platinum case features a signature Top Wesselton diamond set between the lugs at 6 o’clock, a hallmark of the brand’s platinum offerings. Its blue sunburst dial utilizes three apertures for day, date, and month, alongside a large 60-minute chronograph subdial. On the secondary market, this reference typically trades between $75,000 and $95,000 depending on condition and completeness. While the 5905P-001 features the blue dial, the 5905P-010 was a notable black-dial variant produced during the same era before the transition to steel and rose gold versions."}, "listing_stats": {"count": 15, "median": 55950.0, "low": 37950.0, "high": 79500.0, "brands": 1, "merchants": 5}, "listings": [{"id": "h_7692232360023", "title": "Patek Philippe Patek Philippe Annual Calendar Flyback Chronograph", "brand": "Patek Philippe", "model": "Patek Philippe Annual Calendar Flyback Chronograph", "reference": "40931073", "price_usd": 79500.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 40.0, "movement": "Automatic", "complications": ["Annual Calendar", "Chronograph"], "merchant_slug": "analog-shift", "merchant_name": "Analog/Shift", "image_url": "https://cdn.shopify.com/s/files/1/0809/1255/files/AS12481_40931073_PATEKPHILIPPE_ANNUALCALENDARCHRONOPLATBLKDIAL_5905P-010--5.jpg?v=1785323263", 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