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 CHRONOGRAPH 50TH ANNIVESARY 26240ST BLUE NUIT DIAL

Audemars PIGUET ROYAL OAK CHRONOGRAPH 50TH ANNIVESARY 26240ST BLUE NUIT DIAL

This is a discontinued 50th Anniversary Audemars Piguet Royal Oak Chronograph with a Bleu Nuit, Nuage 50 dial and stainless steel case.

  • Condition: Excellent, Unpolished Condition
  • Case size: 41mm diameter
  • Water resistance: unknown
  • Warranty: Under 5 Years Factory Warranty
Posted at
Jun 19, 2025, 10:41 AM
Active
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The Audemars Piguet Royal Oak Offshore Chronograph is a stainless steel watch with a mechanical automatic movement and chronograph function, measuring 44mm in size.

  • Condition: 95%
  • Case material: Stainless Steel
  • Movement type: Mechanical Automatic (3126/3480)
  • Series: I Series (2014)
Posted at
Jun 18, 2025, 9:54 AM
Active
[WTS] AUDEMARS PIGUET Royal Oak 37mm Grey Dial Stainless Steel 15450ST.OO.1256ST.02

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The AUDEMARS PIGUET Royal Oak 37mm Grey Dial Stainless Steel is a modern classic in the Royal Oak family, featuring a 37mm stainless steel case and a beautifully detailed grey dial.

  • Condition: Excellent
  • Case Size: 37mm diameter
  • Dial Color: Grey
Posted at
Jun 17, 2025, 2:11 PM
Active
[WTS] AUDEMARS PIGUET Royal Oak Offshore "The Beast" Blue 42mm 26237ST.OO.1000ST.01

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This Audemars Piguet Royal Oak Offshore "The Beast" is a limited release celebrating the 25th anniversary of the original model, featuring a 42mm stainless steel case and updated technology.

  • Condition: Excellent condition
  • Case size: 42mm diameter
Posted at
Jun 17, 2025, 1:58 PM
Active
Audemars Piguet Royal Oak Offshore Dark Knight Box & Papers 26470SO.OO.A002CA.01

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The Audemars Piguet Royal Oak Offshore is a highly recognizable watch with a black/red color combo and upgraded ceramic bezel, known as the 'Dark Knight'. This version comes with various upgrades that AP has nailed.

  • Condition: Excellent condition
  • Case material: Titanium
  • Bezel material: Ceramic
  • Water resistance depth rating: 120m
Posted at
Jun 17, 2025, 12:18 PM
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[WTS] Audemars Piguet Royal Oak Offshore Diver B+P Fresh Service 15703st

Audemars Piguet Royal Oak Offshore Diver B+P Fresh Service 15703st

The Audemars Piguet Royal Oak Offshore Diver is a luxury sports watch with a rotating inner bezel and water resistance of 300 meters.

  • Condition: Excellent, minimal signs of wear
  • Case diameter: 42mm
  • Case material: Stainless Steel
  • Dial color: Black Méga Tapisserie
Posted at
Jun 16, 2025, 8:24 PM
Active
[WTS] Audemars Piguet Royal Oak Offshore Chronograph

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A stunning Rose Gold edition of the 42 ROO collection, featuring gold trim sub dials and a rubber clad bezel.

  • Condition: Very good condition, slight marks on the case and clasp
  • Case size: 42mm diameter
  • Material: Rose Gold
  • Bezel material: Rubber
Posted at
Jun 15, 2025, 7:12 PM
Active
Audemars PIGUET ROYAL OAK CHRONOGRAPH 26715ST BLUE DIAL AP SERVICED FULL SET

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A 2022 Audemars Piguet Royal Oak Chronograph with a 38mm stainless steel case and Bleu Nuit Nuage 50 dial, purchased from the Audemars Piguet Boutique in 2022.

  • Condition: Excellent Condition
  • Case Size: 38mm
  • Diameter: 38mm
  • Material: Stainless Steel
Posted at
Jun 13, 2025, 10:13 PM
Active
[WTS] Audemars Piguet Royal Oak Offshore Chronograph (Panda) Full Set - 26400SO.OO.A002CA.01

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The Audemars Piguet Royal Oak Offshore Chronograph Panda features a 44mm case with a bold ceramic bezel, making it an unmistakable statement-maker.

  • Condition: very good condition with faint signs of wear
  • Case size: 44mm
  • Bezel material: ceramic
Posted at
Jun 12, 2025, 1:40 PM
Active