Audemars Piguet Royal Oak 25977BA Tourbillon Chronograph 18k Yellow Gold


Audemars Piguet 25977BA Royal Oak Tourbillon Chronograph 25977BA.OO.1205BA.02, 25977BAOO1205BA02, 18k yellow gold on a matching yellow gold bracelet with a foldover deployant clasp, manual wind Audemars Piguet caliber 2889 movement, 72-hour power reserve, tourbillon escapement located at 6 o'clock, white "Petite Tapisserie" dial with luminescent hands and applied indexes, running seconds register is at 9 o'clock, 30-minute counter is at 3, display back, sapphire crystal, water resistant to 20 meters, diameter: 44mm, thickness: 12.9mm. Excellent condition with original box and AP certificate of authenticity. This watch was completely serviced by AP in 2017.

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More about Royal Oak 25977BA Tourbillon Chronograph 18k Yellow Gold

This is an 18k yellow gold Audemars Piguet Royal Oak Tourbillon Chronograph 25977BA.OO.1205BA.02. It has an integral yellow gold link bracelet with a foldover deployant clasp, and an anti-reflective scratch resistant sapphire crystal. It has a pull out hexagonal winding-crown and chronograph push buttons, and an exhibition sapphire display case back secured with 8 white gold screws, and engraved with "ROYAL OAK." The 44mm diameter dodecagonal solid three-body case, hooded downturned lugs, and flat hexagonal bezel with 8 hexagonal white gold face screws and polished beveled edges, are polished/satin brushed. The dial is white with "petite tapisserie" texture, yellow gold faceted baton hands with luminous inserts, and a black center sweep chronograph hand with a needle tip. It includes applied yellow gold ovoid lozenge hour indicators with luminous inserts around a perimeter luminous minute/one-fifth second scale with white luminous Arabic numerals every five seconds to 60, where there is an applied luminous triangle. It has twin recessed gold ringed subsidiary dials with luminous white markers and Arabic numerals, and black indicator hands, including a running small seconds register at 9 o'clock, and a 30-minute chronograph totalizer at the 3 o'clock position. There is an aperture for the one-minute tourbillon regulator underneath a polished steel bridge at 6 o'clock. It has a 72-hour power reserve at full winding, and it's water resistant to 20 meters/65 feet. The 12.9mm thick case, dial, and movement are all signed. This Audemars Piguet Royal Oak Tourbillon Chronograph 25977BA.OO.1205BA.02 has a mechanical manual winding Audemars Piguet caliber 2889 column wheel chronograph movement. The chronograph function has a titanium lever, eliminating the "jumping chronograph hand" when starting the chronograph. It's rhodium-plated, with fausses cotes embellishment, and hand finishing on the nickel silver mainplate and bridges. It's constructed with 25 jewels, 290 components, a lateral lever escapement with a one-minute tourbillon regulator, a monometallic balance that's adjusted to heat, cold, and 5 positions, and the balance spring has variable inertia screws. It includes a self-compensating Breguet balance-spring, The mechanism oscillates at a frequency of 21,600 vph (3 Hz). The Audemars Piguet Royal Oak Tourbillon Chronograph 25977BA.OO.1205BA.02 was originally introduced in 2002.

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