Audemars Piguet 15300ST (Pre-owned - Excellent) — USD 49,995 on eBay

The Audemars Piguet Royal Oak Selfwinding reference 15300ST represents the 39mm stainless steel variant within the Royal Oak Selfwinding series. This reference was produced from 2005 to 2012, featuring a blue dial configuration. The 39mm stainless steel case houses the automatic caliber 3120 movement, offering a 60-hour power reserve. The watch features a fixed octagonal bezel, sapphire crystal, and steel bracelet construction. Water resistance is rated to 50 meters. This reference appeals to collectors seeking a mid-sized Royal Oak in stainless steel with the blue dial option. The 39mm case size positions it between smaller and larger variants within the Selfwinding range, while the seven-year production span from 2005-2012 establishes its place within the model's chronology.