Audemars Piguet 25720BA/O/0002 Star Wheel Automatic 18K Yellow Gold (30629)

30629 Audemars Piguet 25720 Star Wheel Automatic 25720BA/O/0002 25720BAO0002 25720BA O 0002, 18K yellow gold om a strap with an 18k yellow gold buckle, automatic Audemars Piguet caliber 2124, hours indicated on three rotating translucent sapphire discs, white sector indicating the minutes, sapphire crystal, display back, diameter: 36mm, thickness: 9mm, water resistant. This watch was just completely serviced.

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More about Audemars Piguet 25720BA/O/0002 Star Wheel Automatic 18K Yellow Gold

This is an 18k yellow gold Audemars Piguet Star Wheel Automatic 25720BA/O/0002. It has an alligator leather strap with an 18K yellow gold tang buckle, and a scratch resistant sapphire crystal. It has a pull out winding crown, and an exhibition sapphire display case back engraved around the polished perimeter with "STAR WHEEL AUTOMATIC," and a serial number. The 36mm diameter solid three-body case, curved lugs, and stepped bezel are polished/brushed. The dial is guilloche gold with a white 60-minute arch between 10 and 2 o'clock. The hours are exhibited on three rotating transparent sapphire discs, each with four black painted hour indicators. In the center is a rhodium-plated wheel with three arms, with each arm ending in a self-rotating screw that activates the black Arabic numeral hour discs. It's water resistant with a 48-hour power reserve at full wind. The 9mm thick case, dial, and movement are all signed.

The Audemars Piguet Star Wheel Automatic 25720BA/O/0002 has a mechanical automatic self-winding Audemars Piguet caliber 2124 (base Jaeger LeCoultre caliber 888) movement. It's rhodium-plated, with "fausses-côtes" and cotes de Geneve embellishment. It's constructed with 33 jewels, a shock absorber device, and a straight-line lever escapement. It includes a monometallic balance that's adjusted for heat, cold, isochronism, and 5 positions, a self-compensating flat balance-spring, a micrometer regulator, and a 21K gold rotor segment. The mechanism oscillates at a frequency of 21,600 vph (3 Hz).

The Audemars Piguet Star Wheel Automatic 25720BA/O/0002 was introduced in 1990, and it was produced until 1999. It's based on the 17th century "wandering hours" dial. This epicycloidal system was debuted by the Campani brothers of Rome, who used it in their nocturnal clocks during the second half of the 1600's.