The Audemars Piguet Royal Oak Perpetual Calendar reference 25659 is a genuine grail: an octagonal 1980s icon with a moonphase and a full calendar readout on one dial. This 1:1 replica rebuilds that exact layout in a wearable case, so you get the silhouette and the complication display without the auction-house price tag. Here is what to check before you order, from case dimensions to how the subdials actually work.
Key Features
- Signature octagonal bezel with visible hex-screw heads and the correct Royal Oak case geometry
- Full calendar display: day, date, month, moonphase and leap-year indication at the classic dial positions
- Slim case profile that sits flat under a shirt cuff instead of riding high on the wrist
- Scratch-resistant sapphire crystal, with an exhibition caseback on most builds so the movement is visible
- Applied hour markers and hands with clean polishing, on a textured tapisserie-style dial
- Automatic movement driving all calendar subdials, with recessed correctors for quick setting
- Solid 316L stainless steel case and integrated bracelet, brushed on the flats and polished on the bevels
- Deployant-style clasp with engraved detailing and tool-free sizing links
Materials and Specifications
The case is cut from 316L stainless steel and measures in the 39 mm class across the bezel, matching vintage jumbo proportions rather than the oversized modern pieces. Finishing is done in two passes so the brushed top surfaces contrast with the mirror-polished chamfers, which is where cheaper replicas usually give themselves away. Inside, an automatic movement with an added calendar module runs the day, date, month, moonphase and leap-year discs, keeping the case thickness close to the original. The integrated bracelet tapers toward the clasp, uses solid links, and can be shortened with the included pin tool. Water resistance is splash and rain resistant only, so keep it away from swimming and showers.
Shipping and Returns
Orders are packed in discreet, unbranded outer packaging and dispatched with tracking, usually within one to two business days. You get a delivery window estimate by email once the parcel moves. If the watch arrives with transit damage, a misaligned subdial or a fault in the calendar mechanism, contact support within seven days of delivery with photos and we will arrange a replacement or a return. Unworn watches in original condition can be sent back under the same window.
Is it the same size as the original Royal Oak Perpetual?
It is built to vintage jumbo proportions, roughly 39 mm across the bezel with a slim profile, so it wears close to the genuine reference rather than a modern 41 mm Royal Oak.
Do the calendar and moonphase functions actually work?
Yes. The day, date, month, moonphase and leap-year indicators are all driven by the movement and can be set with the crown and the recessed pushers on the case side.
How is the watch shipped?
Every order ships tracked in plain packaging, and you will receive a tracking number as soon as it leaves the warehouse.