Audemars Piguet Royal Oak Perpetual Calendar With Archive Paper

Audemars Piguet Royal Oak Perpetual Calendar Ref. 25820SP.OO.0944SP.02 is a rare and highly collectible 39mm "jumbo" timepiece that represents a significant milestone in the evolution of the iconic Royal Oak collection. It stands out for its masterful bimetallic construction, marrying a brushed stainless steel case and matching bracelet with a highly polished platinum bezel and platinum intermediate bracelet links. This particular iteration features a black galvanized "Grande Tapisserie" hobnail dial that hosts a full perpetual calendar complication displayed seamlessly across four distinct sub-dials, detailing the day (9 o'clock), the date (3 o'clock), the month and integrated leap-year cycle (12 o'clock), and a moon phase display nestled beautifully above the 6 o'clock mark. It is driven by the ultra-thin automatic Caliber 2120/2802 movement, visible through a sapphire exhibition caseback, which boasts an exceptional hand-finished, blackened skeletonized rotor and provides a 40-hour power reserve.