Audemars Piguet Royal Oak Royal Oak Perpetual Calendar Openworked Yellow Gold

Reference 25829BA.OO.0944BA.01

About this watch

The Audemars Piguet Royal Oak Perpetual Calendar Openworked Yellow Gold is a masterpiece of luxury watchmaking, boasting an exquisite design, intricate mechanics, and luxurious materials. This stunning timepiece tells a story through its openworked dial, showcasing the AP 2120 / 2802 caliber's reliability and precision. The perpetual calendar automatically accounts for varying month lengths and leap years, while the moonphase indicator adds celestial charm. Meticulous craftsmanship is evident in the manual finishing of bridges, including polished bevels and satin-brushed edges. The open case back offers a captivating view of the movement's inner workings, featuring an oscillating weight beautifully engraved and decorated. With its 39mm diameter, 9.30mm height, and water resistance of 20 meters, this watch strikes a perfect balance between substance and comfort. It's a statement of luxury and an heirloom that can be passed down through generations.
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Key Features

  • Audemars Piguet caliber AP 2120 / 2802 movement
  • Perpetual calendar with automatic date adjustment
  • Moonphase indicator with Physical Vapor Deposited metal on sapphire
  • Yellow gold case with polished and satin-brushed finishes
  • Openworked dial with Feuille hands
  • Water resistance of 20 meters
  • Sapphire crystal glass

Specifications

Brand
Audemars Piguet
Family
Royal Oak
Model
Royal Oak Perpetual Calendar Openworked Yellow Gold
Reference
25829BA.OO.0944BA.01
Movement
ap-2120-2802
Movement Features
  • Hours, Minutes
  • Date, Day, Leap Year, Month, Perpetual Calendar
  • Moonphase
Case
Yellow Gold 39mm
Dial Color
See-through
Crystal
Sapphire
Water Resistance
20

Current Listings

Audemars Piguet Royal Oak Offshore Rubberclad Black 25940SK.OO.D002CA.01.A FULL

Audemars Piguet Royal Oak Offshore Rubberclad Black 25940SK.OO.D002CA.01.A FULL

The watch is described as a black Rubberclad Royal Oak Offshore, with a strong presence on the wrist and comparable pricing to standard steel Rolex models.

  • Condition: MINT
  • Material: Rubberclad
  • Serial number type: H Serial
  • Production year: 2011
Posted at
Jun 22, 2025, 2:40 AM
Active
Audemars Piguet Royal Oak Offshore Diver 42 White – 15710ST.OO.A002CA.02 – FULL

Audemars Piguet Royal Oak Offshore Diver 42 White – 15710ST.OO.A002CA.02 – FULL

The Audemars Piguet Royal Oak Offshore Diver 42 White features a clean white dial, stunning steel casing, and perfect size at 42mm.

  • Condition: Excellent condition with minimal signs of wear
  • Diameter: 42mm
  • Band Material: rubber
Posted at
Jun 22, 2025, 2:38 AM
Active
Audemars Piguet Royal Oak Automatic 41mm Black Dial 2020 – AP 15500st Full Set

Audemars Piguet Royal Oak Automatic 41mm Black Dial 2020 – AP 15500st Full Set

The Audemars Piguet Royal Oak Automatic 41mm Black Dial 2020 is a statement piece that seamlessly blends elegance with functionality in one of AP's most sought-after configurations.

  • Condition: Great condition, case, crystal and buckle are in great condition
  • Case Size: 41mm diameter
  • Dial Color: Black
  • Material: Stainless Steel
Posted at
Jun 22, 2025, 2:35 AM
Active
[WTS] Audemars Piguet Royal Oak Offshore Ref:26470OR Box & Papers $36,000

Audemars Piguet Royal Oak Offshore Ref:26470OR Box & Papers $36,000

The Audemars Piguet Royal Oak Offshore is a luxury watch that combines sporty and elegant design. It's made of solid 18k rose gold and features a gray 'Mega Tapisserie' dial, paired with a gray rubber strap.

  • Condition: excellent pre-owned
  • Material: solid 18k rose gold
  • Dial color: gray
  • Straps included: 1 x gray alligator strap, 1 x original gray rubber strap
Posted at
Jun 20, 2025, 9:06 PM
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[WTS] [US] Audemars Piguet Royal Oak Offshore Chronograph Smoked Taupe 43mm AP 26420SO - Full Set

[US] Audemars Piguet Royal Oak Offshore Chronograph Smoked Taupe 43mm AP 26420SO - Full Set

This is a highly desirable Taupe dial variant of the newer 43mm Royal Oak Offshore from AP, featuring a ceramic bezel and full ceramic pushers.

  • Condition: Very Good
  • Case size: 43mm
  • Movement: calibre 4401 Flyback Chronograph
Posted at
Jun 20, 2025, 3:57 PM
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[WTS] [US] Audemars Piguet Royal Oak Automatic 41mm Black Dial 2020 - 15500st Complete Set

[US] Audemars Piguet Royal Oak Automatic 41mm Black Dial 2020 - 15500st Complete Set

Up for sale or trade is the Royal Oak that exemplifies AP’s renowned craftsmanship and bold design, housed in a stainless steel case with an elegant black dial.

  • Condition: Very Good
  • Case size: 41mm diameter
  • Serial number type: HR
Posted at
Jun 20, 2025, 3:32 PM
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Audemars Piguet Royal Oak 41mm 15500st Grey 15500ST.OO.1220ST.02

Audemars Piguet Royal Oak 41mm 15500st Grey 15500ST.OO.1220ST.02

This Audemars Piguet Royal Oak 41mm is a fully complete 2020 set, including all box, links, and AP warranty card.

  • Condition: Very good condition with light signs of wear and minor hairlines
  • Year: 2020
  • Size: 41mm diameter
Posted at
Jun 20, 2025, 2:52 PM
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[WTS] 2019 Audemars Piguet Royal Oak 41mm 15500ST Blue Dial - $43,000

2019 Audemars Piguet Royal Oak 41mm 15500ST Blue Dial - $43,000

2019 Audemars Piguet Royal Oak Self Winding 41mm Stainless Steel Blue Grande Tapisserie Dial, in excellent overall condition.

  • Condition: Excellent overall condition
  • Box Set: Yes
  • Papers: Yes
  • Warranty Card: Yes
Posted at
Jun 20, 2025, 2:11 PM
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BNIB Audemars PIGUET ROYAL OAK CHRONOGRAPH 26240ST BLUE NUIT DIAL 2025 FULL SET

BNIB Audemars PIGUET ROYAL OAK CHRONOGRAPH 26240ST BLUE NUIT DIAL 2025 FULL SET

A brand new 41mm Audemars Piguet Royal Oak Chronograph with a stainless steel case and blue nuit, nuage 50 dial.

  • Condition: Brand New in Box
  • Case diameter: 41mm
  • Dial color: blue nuit, nuage 50
Posted at
Jun 20, 2025, 10:59 AM
Active