A highly desirable Audemars Piguet Royal Oak Selfwinding 37mm "50th Anniversary", reference 15550ST.OO.1356ST.02, dating to 2022 and offered as a complete full set with its original box, warranty card, and accessories. Purchased new by its original owner, this watch has been worn only occasionally and remains in excellent overall condition. The case and bracelet appear unpolished, retaining their original factory finishes and sharp lines throughout. The beautiful Bleu Nuit Nuage 50 “Grande Tapisserie” dial is flawless and perfectly preserved. Produced as part of the Royal Oak's 50th Anniversary celebrations, this reference is fitted with the special 50th Anniversary oscillating weightvisible through the sapphire caseback. The bracelet shows only very light signs of wear, with a few minor marks visible on the clasp, while the rest of the watch remains remarkably close to new condition. The bracelet retains all of its original links and shows no stretch. Powered by the automatic calibre 5900, this 37 mm Royal Oak represents the perfect balance between classic Royal Oak proportions and modern mechanical performance. An increasingly collectible anniversary reference, this single-owner example offers outstanding condition, complete provenance, and one of the most attractive blue dial configurations in the modern Royal Oak collection.