AUDEMARS PIGUET ROYAL OAK Reference: 15500ST.OO.1220ST.01. Serial number: PU3907M. Steel case. Blue dial, baton hour markers, date window at 3 o'clock. Mechanical self-winding movement (calibre 4302) no. BC8335. Steel bracelet with signed folding clasp. Sapphire crystal. Circa 2021. Diameter: 41 mm. Accompanied by a travel case, its papers, two additional links and a copy of its purchase invoice. A stainless steel wristwatch automatic movement, by Audemars Piguet. Circa 2021. RC: Sold as is, traces of wear and use. Movement functional at the time of writing the description, provide for servicing, without warranty.