{"product_id":"patek-philippe-grand-complications-5236p-001-in-line-perpetual-calendar-platinum-blue-dial-2025","title":"Patek Philippe Grand Complications 5236P-001 In-Line Perpetual Calendar Platinum Blue Dial (2025)","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe 5236P-001 introduced one of the most significant perpetual calendar developments in modern watchmaking. Unveiled at Watches \u0026amp; Wonders 2021, it became the first wristwatch perpetual calendar to display day, date, and month in a single horizontal aperture at twelve — a configuration historically reserved for rare pocket watches and protected here by three pending patents. For collectors of Patek's \u003ca href=\"https:\/\/wristaficionado.com\/collections\/patek-philippe-grand-complications\"\u003eGrand Complications\u003c\/a\u003e, the reference represents a rare instance of genuine mechanical innovation rather than refinement, while the case design draws lineage from the legendary 3448, the maison's first automatic perpetual calendar from 1962.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe 41.3mm platinum case measures 11.07mm thick and frames a blue dial with black-gradient rim and vertical satin finish, accented by faceted white gold baton hour markers and the in-line calendar aperture at twelve. Moon phase and small seconds occupy six o'clock, with leap year and day\/night indications in subsidiary apertures. The self-winding Caliber 31-260 PS QL — built from 503 components and incorporating an off-center platinum mini-rotor — delivers up to 48 hours of reserve. A signature platinum diamond between the lugs at six and a navy alligator strap with platinum fold-over clasp complete the piece.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e*This timepiece comes with a stylus.\u003c\/p\u003e","brand":"Patek Philippe","offers":[{"title":"Default Title","offer_id":45968142794996,"sku":"P5284S","price":117400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0266\/7141\/5373\/files\/patek-philippe-grand-complications-5236p-001-in-line-perpetual-calendar-platinum-blue-dial-2025-patek-philippe-1239482174.jpg?v=1779297110","url":"https:\/\/wristaficionado.com\/products\/patek-philippe-grand-complications-5236p-001-in-line-perpetual-calendar-platinum-blue-dial-2025","provider":"Wrist Aficionado","version":"1.0","type":"link"}