Audemars Piguet 25820SP.OO.0944ST.03 Royal Oak Perpetual Calendar Black Dial SS / Platinum FULL SET (34088)

34088 Audemars Piguet 25820SP.OO.0944ST.03, Royal Oak Perpetual Calendar, 25820SP-OO-0944ST-03, 25820SPOO0944ST03, stainless steel and platinum Royal Oak case on a stainless steel and platinum bracelet, the bracelet is fully linked, automatic AP caliber 2120/2802, perpetual calendar with day, date, month, and moonphase, leap year indicator, black waffle dial, luminous hands and indexes, sapphire crystal, display back, diameter: 39mm, thickness: 10mm, F Series. Like New with the original box and papers dated December of 2007.

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More about Audemars Piguet 25820SP.OO.0944ST.03 Royal Oak Perpetual Calendar Black Dial SS / Platinum FULL SET

This is a stainless steel and platinum Audemars Piguet Royal Oak Perpetual Calendar 25820SP.OO.0944ST.03. It has an integral stainless steel and platinum bracelet with a double deployant clasp, and a scratch resistant sapphire crystal. It has an exhibition sapphire display case back secured with 8 gold screws and engraved around the perimeter with "AUDEMARS PIGUET – SWISS MADE - QUANTIUM PERPETUAL AUTOMATIQUE," a serial and an edition number. There is a hexagonal screw-down winding crown, and the 39mm diameter solid three-body case, integral lugs, bracelet, and flat octagonal bezel secured by 8 hexagonal white gold screws, are polished and brushed. There are two correctors on each side of the case band. The dial is black with a waffle “Grande Tapisserie” pattern, with luminescent Royal Oak baton hands and hour markers, with an outer minute track. It has a subsidiary dial for the days of the week at 9 o'clock, a sub dial at the 3 o'clock position for the days of the month, one for the months and the leap year at 12, and there is a moon phase indicator at 6 o'clock. It's water resistant to 50 meters/150 feet, and it has a 40-hour power reserve. The 10mm thick case, dial, and movement are all signed.

This Audemars Piguet Royal Oak Perpetual Calendar 25820SP.OO.0944ST.03 has a mechanical automatic self-winding Audemars Piguet caliber 2120/2802 movement that's rhodium-plated. It's constructed with 38 jewels, 343 components, and a shock absorber mechanism. The balance has variable inertia blocks, a mobile stud balance spring holder, and a 21K gold oscillating weight segment. It has bidirectional winding and a self-compensating flat balance spring. There is a suspended barrel, and the shake of the oscillating weight is precise with an annular ring that runs on four jewels. The bridges are hand polished, with polished bevels, satin-brushed edges, and perlage on the recesses. There is a straight-line lever escapement, and a Gyromax balance that's adjusted to heat, cold, isochronism and 5 positions. It includes a hand-engraved skeletonized rotor with a 21K gold segment. The Moon phase is constructed with physical vapor deposited with metal onto sapphire. The mechanism oscillates at a frequency of 19,800 vph (2.5Hz).

This Audemars Piguet Royal Oak Perpetual Calendar 25820SP.OO.0944ST.03 will self-adjust until the year 2100.