They don’t make them like this anymore. This is not just a yellow gold Audemars Piguet Royal Oak — it's a fully open worked example of one of the most iconic perpetual calendar Royal Oaks ever made. Reference 25829BA takes the familiar silhouette of the 25820 and transforms it into a mechanical showcase, revealing the movement in all its intricate detail. Originally introduced in 1983, the Royal Oak Perpetual Calendar was AP’s bold move to blend ultra-thin haute horlogerie complications with the rugged sport-luxury look of Gerald Genta’s masterpiece. It was a first of its kind, and it set the tone for complicated luxury sports watches going forward. At the heart of it all is the legendary calibre 2120/2802, built on the Jaeger-LeCoultre 920 ébauche—an ultra-thin movement famously used in icons like the original 'Jumbo' Royal Oak 5402, the original 'Jumbo' Patek Philippe Nautilus 3700, and Vacheron Constantin's 222. The 25829BA is fully skeletonized, offering a captivating view of the intricate network of gears, levers, and perpetual calendar functions. Through both the dial and sapphire caseback, the craftsmanship becomes apparent—the bridges are beautifully engraved with delicate vine motifs, and the openworked 21k gold rotor is a work of art in itself, featuring meticulous decoration that adds an extra layer of elegance and refinement to the movement. Crafted entirely in 18k yellow gold, the 39mm case retains the original ‘Jumbo’ proportions and iconic Royal Oak architecture. This piece was delivered in 2007 and comes with the official Extract from the Archives from Audemars Piguet confirming its production and sale. The condition of this timepiece is excellent, with a well-preserved case and a sharp and thick bezel. The watch barely shows any signs of wear. The bracelet is in great shape and shows no stretch. Overall, this watch has been maintained carefully, remaining an attractive and high-quality example. Collector? Flexer? Doesn’t matter. This Royal Oak is here to show off, and it’s doing it in style.
- extrasExtract from the Archives
- year2007
- reference25829BA
- modelRoyal Oak Perpetual Calendar
