Royal Joaan Bin Hamad Al Thani spotted wearing a Audemars Piguet

Prince Joaan Bin Hamad Al Thani, chairman of the Qatar Olympic Committee and a quietly influential figure in global sport, was recently spotted wearing one of Audemars Piguet's most coveted complications — the Royal Oak Perpetual Calendar in 18K white gold, reference 26598BC. The watch's purple Grande Tapisserie dial and diamond-set bezel make it immediately recognizable to collectors, and its appearance on the wrist of Qatari royalty is entirely in keeping with the piece's ultra-luxe positioning.

The Royal Oak Perpetual Calendar ref. 26598BC is built around the legendary AP Calibre 2120/2802, a self-winding movement that has been in production since 1984 and remains a benchmark for ultra-thin perpetual calendar engineering. At just 3.95mm in height, the movement allows the 41mm case to maintain the Royal Oak's characteristic athletic profile without the bulk that perpetual calendar complications typically demand. The mechanism displays day, date, month, moon phase, and leap year — all without requiring manual correction until the year 2100.

From a collector's standpoint, the 26598BC occupies rare ground. The combination of an 18K white gold case, 32 factory-set baguette-cut diamonds on the bezel, and the striking purple dial puts this squarely in haute joaillerie territory while retaining full mechanical credibility. AP does not cut corners on set stones — each baguette is individually matched and set in-house, a process that adds weeks to production. Purple dial variants of the Royal Oak Perpetual Calendar are produced in limited numbers and attract serious attention at secondary market auctions.

Prince Joaan is no stranger to precision and performance — his oversight of Qatar's remarkable Olympic infrastructure and bid processes demands both. His watch choices have historically reflected a preference for technically serious pieces worn without ostentation, and the 26598BC fits that profile: extravagant in materials, disciplined in execution.

On the current market, the Audemars Piguet Royal Oak Perpetual Calendar ref. 26598BC commands approximately $415,000 at grey-market rates, a figure that reflects both the complexity of the movement and the rarity of this specific dial and bezel configuration. For collectors seeking the intersection of haute horlogerie and haute joaillerie, few references make the case more convincingly.