{"product_id":"patek-philippe-5236p-inline-perpetual-calendar","title":"Patek Ref. 5236P-001 - 2022 \u003cbr\u003ePlatinum In-Line Perpetual Calendar \u003cbr\u003eCaliber 31-260 PS QL \u003cbr\u003eFull Set \u003cbr\u003eCertificate of Origin","description":"\u003cp\u003eIntroduced in 2021, the Patek Philippe Reference 5236P represents one of the most technically ambitious perpetual calendar wristwatches produced by the manufacture in recent decades. Housed in a platinum case and powered by the newly developed Caliber 31-260 PS QL, the reference marked the debut of Patek Philippe's first in-line perpetual calendar display in a wristwatch. While perpetual calendars have long been central to the maison's identity, the 5236 introduced a completely new display architecture requiring extensive mechanical development and multiple patented innovations.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe defining feature of the reference is the in-line calendar display positioned across the upper portion of the dial, presenting the day, date, and month together within a single horizontal aperture. Though visually restrained, this arrangement is mechanically complex. To achieve the display without sacrificing legibility, Patek Philippe developed a patented co-planar system utilizing four calendar discs mounted on the same plane. Two discs display the tens and units of the date, while separate discs display the day and month. Anti-backlash mechanisms ensure precise alignment of each indication, allowing the calendar to change instantaneously at midnight while maintaining perfect visual alignment within the apertures.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe concept itself draws inspiration from rare mid-twentieth-century Patek Philippe perpetual calendar pocket watches that employed similar in-line calendar displays. Translating this historical display format into a modern wristwatch required decades of technical progress and ultimately resulted in a movement architecture specifically developed for the reference. The resulting Caliber 31-260 PS QL incorporates 503 components and represents a significant advancement within Patek Philippe's modern perpetual calendar lineage.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe self-winding movement utilizes an off-center platinum micro-rotor to maintain the relatively slim case profile while delivering efficient winding. The regulating system incorporates a Gyromax balance and a Spiromax silicon balance spring, contributing to improved stability and long-term accuracy. The movement is finished to the high standards associated with the manufacture, including Geneva striping, hand-finished anglage, perlage on the baseplate, polished screw heads, and an engraved micro-rotor.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe present example features the distinctive gradient blue-to-black (Bleu dégradé noir) vertically satin-finished dial associated with the reference. Applied white-gold hour markers and faceted hands complement the architectural calendar display, while a subsidiary seconds register with integrated moonphase indication appears at six o'clock. The dial further incorporates leap-year and day-night indicators flanking the moonphase display, completing the full perpetual calendar indications while maintaining a remarkably balanced and legible layout.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe platinum case measures approximately 41.3 mm in diameter and retains the refined Calatrava-inspired proportions characteristic of the model. As with all platinum Patek Philippe wristwatches, the case features the maison's signature diamond discreetly set between the lugs at six o'clock. The watch is accompanied by both the sapphire crystal display back and the solid platinum caseback supplied by the manufacture.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis example was manufactured and shipped from the Patek Philippe manufacture in July 2022 and subsequently retailed by Berger Joyeros in Mexico City on December 2, 2022. It is offered as a complete set including the outer box, inner presentation box, Certificate of Origin, setting stylus, interchangeable solid platinum caseback, accompanying literature, and WRISTORIAN presentation packaging.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e The watch presents in excellent overall condition with minimal signs of wear. Hallmarks are visible on the reverse of all four lugs, and there is no visible evidence of polishing. The dial and hands remain well preserved, and the watch was observed setting and running normally at the time of cataloguing.\u003c\/p\u003e","brand":"WRISTORIAN","offers":[{"title":"Default Title","offer_id":47564476678314,"sku":"WRI-6.585.034","price":120000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0650\/1236\/7530\/files\/5236-F.jpg?v=1771061150","url":"https:\/\/www.wristorian.com\/products\/patek-philippe-5236p-inline-perpetual-calendar","provider":"WRISTORIAN® ","version":"1.0","type":"link"}