Audemars Piguet 15550ST (Pre-owned - Good) — USD 50,300 on eBay

The Audemars Piguet Royal Oak Selfwinding 41mm, reference 15510, represents the latest iteration of the iconic Gérald Genta-designed sports watch. Positioned as a core model within the Royal Oak collection, it continues the legacy of the original 1972 reference while incorporating contemporary refinements and an updated movement. This reference is offered in various dial colors, maintaining the signature "Grande Tapisserie" pattern. This timepiece features a 41mm stainless steel case with the characteristic octagonal bezel secured by eight hexagonal screws. It is powered by the in-house Caliber 4302, an automatic movement operating at 28,800 vibrations per hour (4 Hz) with a power reserve of 70 hours. The movement is visible through a sapphire case back, showcasing its finishing and the 22k gold oscillating weight. The 15510 is significant for collectors as it refines the modern Royal Oak aesthetic, offering a cleaner dial layout compared to its 15500 predecessor by removing the minute track. Its robust movement and classic proportions ensure its continued relevance and desirability within the luxury sports watch segment.