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Audemars Piguet Royal Oak Perpetual Calendar Openworked Ceramic Ref 26585CE, 2021 — view 1 of 6
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Wristwatches · Wristwatch

Audemars Piguet Royal Oak Perpetual Calendar Openworked Ceramic Ref 26585CE, 2021

DocumentedDocumented from a dealer's listing; attribution and date as stated by the dealer.
Maker / attribution
Audemars Piguet (maker)
Date
2021
Country of origin
Switzerland
Object type
Wristwatch
Materials / technique
ceramic
Dimensions
Case 48 mm
Stock no.
Product 6991192916055
Credit line
Dealer listing, S.Song Watches (product 6991192916055)
Catalogue title (original)
Audemars Piguet Royal Oak Perpetual Calendar Openworked Ceramic Ref 26585CE (English)

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Record summary

Catalogued by S.Song Watches (dealer), Seattle (stock number Product 6991192916055), this is a wristwatch by Audemars Piguet, made in Switzerland, dated 2021. The Atlas places it in the Contemporary Horology period (2010 – Present) of its Wristwatches collection. Materials and techniques recorded by the source: ceramic. Recorded dimensions: Case 48 mm. The record is illustrated with 6 photographs.

Assembled from the source record's structured fields. Dates and attributions are given as the source states them; where a field is missing the Atlas leaves it blank rather than estimating.

Catalogue description

Dealer description — S.Song Watches

The Royal Oak, with its masculine octagonal case, exposed screws, and integrated bracelet is one of the most distinctive watches in the market today. It is imposing and recognizable, and in my opinion, one of the best statement watches money can buy. Traditionally, the spotlight has always been on the classic stainless steel or precious metal Royal Oaks. However, over the past decade, Audemars Piguet has ventured into extensive experimentation by utilizing an alternative material for its iconic Royal Oak cases—ceramic. The inaugural full black ceramic model was first introduced in early 2011 (in the form of the massive 48mm Royal Oak Offshore Arnold Schwarzenegger ‘The Legacy’ Chronograph), since then, numerous iterations have followed, incorporating various high-end complications such as the open-worked perpetual calendar, the tourbillon, etc. That said, what we have for you today is probably one of the most exceptional and stunning ceramic Royal Oaks featured on our site—the Audemars Piguet Royal Oak Perpetual Calendar Openworked Ceramic Ref. 26585CE. Let me explain why. Starting with its fully blacked-out 41mm x 9.9mm ceramic case, it is essential to acknowledge that working with ceramic poses considerable technical challenges due to its intrinsic hardness and lightweight nature. Despite the technical difficulty, Audemars Piguet remained steadfast in their commitment to maintaining the renowned level of finishing and distinctive characteristics that define the Royal Oak. When you run your fingers over the case of the Ref. 26585CE, you'll discover that it impeccably retains all the signature finishes of the Royal Oak – highly polished bevels along the edges, a satin-brushed mid-case, and vertically brushed surfaces on the bezel. This meticulous level of finishing and attention to detail seamlessly extends to the bracelet as well. As we all know, Audemars Piguet produces some of the most exquisite and robust integrated bracelets for their Royal Oaks, and the one here on the Ref. 26585CE is no exception. Notably, the assembly of the bracelet alone demands a whopping 30 hours (and approximately 600 hours of research and development), resulting in a truly stunning ceramic bracelet. Moving on to the focal point of this timepiece, the captivating transparent sapphire dial takes center stage, providing a glimpse into the inner workings of the Ref. 26585CE. Housed within is Audemars Piguet’s in-house self-winding Cal. 5135 (derived from the Cal. 5134 found in standard perpetual calendar models, with the Cal. 5135 having undergone extensive open-working), boasting an intricate assembly of a total of 374 components and a 40-hour power reserve. The see-through sapphire dial, adorned with exquisite detailing and decoration, possesses a subtle smoked effect along its periphery for enhanced legibility. Here, you will find a day indicator on the left, a date indicator on the right, a month indicator at 12 o'clock as well as a moon phase at the 6. The dial is further embellished with rose gold applied hour markers and hands, complemented by sub-dials encircled with rose gold outer rings, along with a moon phase beautifully crafted out of aventurine. You will also find an inner bezel at the rehaut that serves as a week indication, which is marked by a contrasting white hand. An absolute feast for the eyes, the see-through dial unveils a plethora of mechanical components in full uncluttered view, fully embodying the "Openworked" essence in its name. This visually stunning movement can be admired not only through the dial but also through the transparent caseback, which boasts impeccable finishing and a splendid gold rotor with an engraved ‘AP’ logo. In its entirety, the Ref. 26585CE seamlessly fuses a timeless aesthetic with impeccable craftsmanship, utilizing cutting-edge materials to achieve a modern masterpiece. To put it simply, the Ref. 26585CE is an astonishing, awe-inspiring work of art. When I was first handed the watch to be inspected up close, I found myself utterly speechless, and for good reason. While some may argue that the Ref. 26585CE deviates from the classic essence of its predecessors, but as a devoted enthusiast of classical watch design myself, I wholeheartedly acknowledge that this reference perfectly exemplifies how thoughtful and innovative contemporary design can elevate and redefine a traditional archetype. While not explicitly designated as a limited edition, the Ref. 26585CE is a boutique-exclusive, which makes it very sought-after and extremely difficult to acquire as the waiting lists for this watch can extend for several years. To be able to offer it on our website today is a genuine delight for us.

Historical context

Contemporary Horology (2010 – Present)

Silicon components, connected watches, optical-lattice research clocks and a thriving independent scene.

Smartwatches became the world's best-selling watches, while mechanical watchmaking focuses on craft, innovation (silicon components, new escapements) and independent makers.

Read the period in the timelineMore wristwatches from this periodEarlier: Mechanical Renaissance

Atlas type guide

Calendar, moon-phase and perpetual calendar watches

Calendar complications range from a simple date to the perpetual calendar, which automatically allows for months of different lengths and leap years until 2100. Pocket watches with perpetual calendars were made in the eighteenth and nineteenth centuries; Patek Philippe made the first perpetual calendar wristwatch in 1925, and series production followed in 1941. The annual calendar (Patek Philippe, 1996) needs correction only once a year.

Moon-phase displays use a disc with two moons and 59 teeth advanced daily, approximating the 29.5-day lunation; more precise trains reduce the error to one day in over a century.

What to look for

  • Apertures or subsidiary dials for day, date, month and leap year.
  • Moon disc under a 'bosom' shaped aperture.
  • Recessed correctors on the case band for setting the calendar.

Dating clues

  • Triple-date wristwatches: popular c. 1940–1955.
  • Perpetual calendar wristwatches: from 1925 (unique) and 1941 (series).

General guidance written by the Atlas editors about this kind of object. It is not a statement about this particular piece; for that, rely on the source record above and on physical examination.

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