Audemars Piguet 15320BC.OO.D028CR.01 Millenary Automatic, 15320BCOOD028CR01, 18K white gold on a strap with a 18K white gold deployant buckle, automatic movement (AP caliber 3120), silver / white outer dial, blue arabic numerals, polished 18K white gold, roman numerals, date at 3 o'clock, sweep seconds, sapphire crystal, display-back, power reserve to 60 hours, water resistant to 20 meters, size: 45mm x 40mm, thickness: 9mm, like new with original box and papers.This is an 18K white gold Audemars Piguet Millenary Automatic, 15320BC.OO.D028CR.01. It has a leather strap with a matching 18K white gold deployment buckle, and a scratch resistant sapphire crystal. The 45mm by 40mm solid three-body ovoid case, stepped rounded bezel, fluted downturned lugs, and exhibition sapphire display case back secured by 6 screws, are polished. The two-tone dial has an off center silver time circle with radial Roman numeral hour markers, blued feuille hands with luminous inserts, and there is a center sweep seconds hand around a minute/second scale with large applied Arabic numerals every five minutes/seconds to 60 on a white outer reserve. There is a date aperture window at the 3 o'clock position, and there is a 60-hour power reserve at full wind. It's water resistant to 20 meters/70 feet, and the 9mm thick case, dial, and movement are all signed. This Audemars Piguet Millenary Automatic 15320BC.OO.D028CR.01 has a mechanical automatic self-winding Audemars Piguet caliber 3120 movement. It's rhodium-plated, with "fausses-côtes" embellishment. It's constructed with 40 jewels, a shock absorber mechanism, and a straight-line lever escapement. It has a monometallic balance adjusted for heat, cold, isochronism and 5 positions, a self-compensating flat balance-spring, and a 21K gold rotor segment with the Audemars Piquet crests and emblem.