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

[WTS] 2023 Audemars Piguet Royal Oak Offshore Chrono 42mm 26238ST Blue Dial - $39,850

2023 Audemars Piguet Royal Oak Offshore Chrono 42mm 26238ST Blue Dial - $39,850

The seller is listing a 2023 Audemars Piguet Royal Oak Offshore Chronograph in stainless steel with a blue dial and black counters.

  • Condition: Excellent overall condition
  • Case size: 42mm diameter
  • Material: Stainless Steel
  • Strap material: Blue rubber and Black Calfskin leather
Posted at
Feb 17, 2026, 1:16 PM
Active
[WTS] Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 26238CD.OO.1300CD.01 Complete Set

Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 26238CD.OO.1300CD.01 Complete Set

This Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 is a brand-new 2025 release with a bold design and unmistakable Offshore character, featuring a blue ceramic build and 42 mm case.

  • Condition: Like new
  • Case size: 42 mm
  • Case material: Blue ceramic with titanium caseback
  • Bezel material: Ceramic
Posted at
Feb 17, 2026, 8:56 AM
Active
[WTS] Audemars Piguet Royal Oak Offshore 26470IO – Titanium/Ceramic – Box & Papers – Random Serial (2020+) – Great Condition – 26,800 Shipped – Trades Welcome

Audemars Piguet Royal Oak Offshore 26470IO – Titanium/Ceramic – Box & Papers – Random Serial (2020+) – Great Condition – 26,800 Shipped – Trades Welcome

Audemars Piguet - 26470IO · $26,800
This Audemars Piguet Royal Oak Offshore Ref. 26470IO features a titanium case, gray ceramic bezel, and AP automatic chronograph movement, giving it a rugged yet luxurious presence.

  • Condition: great
  • Case material: titanium
  • Bezel material: gray ceramic
  • Movement type: AP automatic chronograph movement
Posted at
Feb 15, 2026, 12:13 PM
Active
[WTS] Vintage Seiko Sports 150 – Alarm Chronograph – 😏 “Poor Man’s AP Royal Oak” 😏 – 7T34-7A10 – $245 Shipped

Vintage Seiko Sports 150 – Alarm Chronograph – 😏 “Poor Man’s AP Royal Oak” 😏 – 7T34-7A10 – $245 Shipped

Seiko - 7T34-7A10 · $245
This vintage Seiko Sports 150 is a stylish and functional chronograph watch featuring date display, alarm functions, and powered by quartz movement. It's housed in an approximately 44mm case on its original bracelet.

  • Condition: Used with signs of wear and fading
  • Case Size: approximately 44mm
  • Strap Length: up to 8 inches
Posted at
Feb 14, 2026, 2:14 PM
Active
[WTS] Audemars Piguet Royal Oak Offshore Diver “The Admiral”

Audemars Piguet Royal Oak Offshore Diver “The Admiral”

The Audemars Piguet Royal Oak Offshore Diver 'The Admiral' features a 42mm case, white hobnail dial, and integrated strap with navy blue accents.

  • Condition: Excellent Condition
  • Case size: 42mm
  • Water resistance: 200m depth rating
Posted at
Feb 14, 2026, 11:01 AM
Active
[WTS] Audemars Piguet Royal Oak 6014ba ($39,500)

Audemars Piguet Royal Oak 6014ba ($39,500)

Audemars Piguet - 6014BA · $39,500
This Audemars Piguet Royal Oak is a solid 18K gold watch with a quartz movement, suitable for a 7-inch wrist.

  • Condition: really nice
  • Material: solid 18K gold
  • Wrist size compatibility: roughly 7 inch
Posted at
Feb 13, 2026, 4:22 PM
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[WTS] Audemars Piguet Royal Oak Offshore Selfwinding Chronograph Ceramic Rose Gold Grey Dial 44mm Box & Papers 26405NR.OO.A002CA.01

Audemars Piguet Royal Oak Offshore Selfwinding Chronograph Ceramic Rose Gold Grey Dial 44mm Box & Papers 26405NR.OO.A002CA.01

The watch is a 44mm rose gold and black ceramic Audemars Piguet Royal Oak Offshore Selfwinding Chronograph with a smoked grey dial.

  • Condition: Like new
  • Case size: 44mm
  • Movement caliber: 3126/3840
  • Power reserve: 50 hours
Posted at
Feb 13, 2026, 9:05 AM
Active
[WTS] Audemars Piguet Royal Oak Offshore 26470IO – Titanium/Ceramic – Box & Papers – Random Serial (2020+) – Great Condition – 26,800 Shipped – Trades Welcome

Audemars Piguet Royal Oak Offshore 26470IO – Titanium/Ceramic – Box & Papers – Random Serial (2020+) – Great Condition – 26,800 Shipped – Trades Welcome

Audemars Piguet - 26470IO · $26,800
Up for sale is an Audemars Piguet Royal Oak Offshore Ref. 26470IO, one of the most striking modern Offshore configurations. The titanium case paired with the gray ceramic bezel gives this piece a rugged, stealth-luxury presence, while still wearing comfortably thanks to the lightweight build.

  • Condition: Great
  • Case Material: titanium
  • Bezel Material: gray ceramic
  • Movement: AP automatic chronograph movement
Posted at
Feb 12, 2026, 11:14 AM
Active