Audemars Piguet Royal Oak 15500ST Discontinued
About This Watch
The Audemars Piguet Royal Oak 15500ST was the direct successor to the legendary 15400ST and brought the new caliber 4302 with a 70-hour power reserve to the 41mm Royal Oak. Designed by Gerald Genta in 1972, the Royal Oak was the world's first luxury stainless steel sports watch, featuring the now-iconic octagonal bezel with eight exposed hexagonal screws, an integrated bracelet, and the "Grande Tapisserie" waffle-pattern dial. The 15500ST introduced a redesigned dial with the AP logo repositioned from 6 o'clock to its original position at the top, a date aperture shifted to 3 o'clock, and a larger "Grande Tapisserie" pattern. The caliber 4302, developed in-house, features a modern architecture with a longer mainspring for the extended power reserve. The blue dial with the tapisserie pattern creates a mesmerizing visual effect as light plays across the geometric grid at different angles. Despite being discontinued in favor of the 16202ST, the 15500ST remains one of the most sought-after Royal Oak references, trading at significant premiums above retail. It represents the mature, evolved Royal Oak before AP shifted to the thinner Jumbo format.
In-Depth Review
# The Royal Oak 15500ST: A Watershed Moment for Audemars Piguet's Icon
Introduced in 2019, this stainless steel iteration of the Royal Oak represented a pivotal moment for one of watchmaking's most sacred designs. The 15500ST abandoned the previous 41mm case for a more refined 10.4mm thickness while maintaining the iconic octagonal bezel with exposed screws that have defined the collection since Gérald Genta's 1972 original. The blue "Grande Tapisserie" dial, a signature Audemars Piguet finish, gives the piece distinct visual character despite its restrained complications—just a date window and a robust AP 4302 caliber with an impressive 70-hour power reserve. These specifications don't read as revolutionary, but the execution reflects decades of institutional knowledge and uncompromising standards in finishing and assembly.
The 15500ST appeals to a specific collector: someone who appreciates established heritage over trendy novelty, who understands that sports watches needn't be adorned with complications to justify their cost, and who views watches as wearable investments rather than speculative assets. This is the choice for the seasoned watch enthusiast attending important meetings or formal dinners alike—a piece that transcends occasion through sheer pedigree.
At current secondary market prices around 45,000 dollars, the 15500ST commands a significant premium over its original retail. Competitors like the Patek Philippe Nautilus 5711 and Rolex Daytona occupy similar territory, though both maintain stronger availability. The Royal Oak's discontinuation has only intensified collector demand, cementing its status as the thinking person's sports luxury watch.
Specifications
Movement
| Movement Type | Automatic |
|---|---|
| Caliber | AP 4302 |
| Power Reserve | 70 hours |
| Frequency | 28,800 vph |
| Jewels | 32 |
Case
| Case Diameter | 41.0mm |
|---|---|
| Case Thickness | 10.4mm |
| Case Material | Stainless Steel |
| Crystal | Sapphire |
| Bezel | Fixed, octagonal with exposed screws |
| Dial Color | Blue "Grande Tapisserie" |
| Lug-to-Lug | 47.0mm |
Features
| Water Resistance | 50m / 164ft |
|---|---|
| Bracelet/Strap | Stainless Steel integrated bracelet |
| Clasp | AP folding clasp |
| Weight | 155g |
| Complications |