Audemars Piguet Royal Oak Royal Oak 25554 Perpetual Calendar

Reference 25554ST.O.0344ST.01

About this watch

The Audemars Piguet Royal Oak 25554ST.O.0344ST.01 is a masterpiece of horology, blending elegance and sophistication with technical excellence. Produced in 1981, this perpetual calendar watch marked a significant point in horological history, featuring a stainless steel construction and intricate details on the dial. The silver-colored 39mm case strikes an ideal balance between boldness and refinement, while the stick-shaped hands and dot indexes provide easy readability. The Audemars Piguet caliber AP 2120 / 2800 automatic movement is renowned for its precision and reliability, boasting a power reserve of 40 hours and operating at a frequency of 21,600 vibrations per hour. With 38 jewels, this extra-thin movement is a testament to the brand's engineering prowess. The Royal Oak 25554 is not only a stunning timepiece but also a valuable investment, holding its value well due to its heritage and craftsmanship. Its ergonomic design makes it surprisingly comfortable on the wrist, while the stainless steel bracelet is both stylish and adjustable.
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Key Features

  • 39mm stainless steel case
  • Silver-colored dial with stick-shaped hands and dot indexes
  • Perpetual calendar functionality
  • Audemars Piguet Caliber AP 2120 / 2800 automatic movement
  • 38 jewels, power reserve of 40 hours, frequency of 21,600 vibrations per hour
  • Sapphire glass for scratch protection
  • Water-resistant to a certain extent

Specifications

Brand
Audemars Piguet
Family
Royal Oak
Model
Royal Oak 25554 Perpetual Calendar
Reference
25554ST.O.0344ST.01
Movement
ap-2120-2800
Movement Features
  • Hours, Minutes
  • Date, Day, Month, Perpetual Calendar
Case
Stainless Steel 39mm
Dial Color
Silver
Crystal
Sapphire

Current Listings

[WTS] Audemars Piguet Royal Oak Offshore “Half Brick” 26470OR – 2019 Full Set – Excellent Condition – $39,000

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This Audemars Piguet Royal Oak Offshore Chronograph 'Half Brick' is a stunning example in excellent condition, with incredible wrist presence and a perfect blend of luxury, sport, and unmistakable AP character.

  • Condition: Excellent condition
  • Case material: rose gold
  • Diameter: 44mm
  • Year: 2019
Posted at
Apr 6, 2026, 3:10 PM
Active
[WTS] AP Royal Oak Dual Time 26120ST

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  • Condition: Preowned, with minor signs of wear on the case and bracelet
  • Case Size: 39mm
Posted at
Apr 6, 2026, 10:50 AM
Active
[WTS] Audemars Piguet Royal Oak 33mm 15000ST Navy

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Audemars Piguet - 15000ST · $27,950
The Audemars Piguet Royal Oak 33mm is a neo-vintage watch with an automatic movement, introduced in 1995. It features a deep blue tapisserie dial and a 33mm integrated bracelet case.

  • Condition: great pre owned condition
  • Case size: 33mm diameter
  • Water resistance: 50m depth rating
  • Movement: AP calibre 2140 (upgraded to 2240 in 2025)
Posted at
Apr 4, 2026, 9:33 PM
Active
[WTS] 1995 Audemars Piguet Royal Oak 120th Anniversary LE ref. 56975ST w/ Box & Extract

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Audemars Piguet - 56975ST · $21,800
A 1995 Audemars Piguet Royal Oak 120th Anniversary LE with a blue petite tapisserie dial and stainless steel bracelet. The watch features a quartz movement and has been kept accurate time over a 24-hour period.

  • Condition: Minimal wear, excellent condition overall
  • Case material: Stainless steel
  • Case diameter: 33mm
  • Lug width: 23.5mm
Posted at
Apr 4, 2026, 12:09 PM
Active
[WTS] Audemars Piguet Royal Oak Tourbillon Chronograph 44mm 26377SK.OO.D002CA.01 Complete Set

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This 44mm Royal Oak Tourbillon Chronograph features a clean black 'Méga Tapisserie' dial and an exposed tourbillon at 6 o'clock, providing a sophisticated backdrop for the high-complication movement. The rubber-clad bezel adds a unique matte texture and industrial contrast against the brushed stainless steel case.

  • Condition: Excellent
  • Case Size: 44mm
  • Case Thickness: 13.2mm
  • Water Resistance: 20m (2 ATM)
Posted at
Apr 3, 2026, 8:31 AM
Active
[WTS] 2023 Audemars Piguet Royal Oak Offshore Diver, Blue Dial 15720ST — Like New Condition, Box & Papers

2023 Audemars Piguet Royal Oak Offshore Diver, Blue Dial 15720ST — Like New Condition, Box & Papers

Audemars Piguet - 15720ST · $25,000
The Audemars Piguet Royal Oak Offshore Diver is a bold, modern dive watch that combines the rugged Offshore aesthetic with refined finishing. It features a vibrant blue dial and an inner rotating dive bezel.

  • Condition: Like new condition
  • Case diameter: 42mm
  • Lug to lug length: 52mm
  • Thickness: 14.2mm
Posted at
Apr 1, 2026, 9:32 AM
Active
[WTS] Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 26238CD.OO.1300CD.01 Complete Set

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This Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 is a brand-new 2025 release with an in-house flyback chronograph movement and 70-hour reserve, presented in a 42 mm blue ceramic case.

  • Condition: like new
  • Movement Type: Mechanical (Automatic)
  • Case Size: 42 mm
  • Case Thickness: 15.3 mm
Posted at
Apr 1, 2026, 8:37 AM
Active
[WTS] Audemars Piguet Royal Oak Offshore Selfwinding Chronograph Ceramic Rose Gold Grey Dial 44mm Box & Papers 26405NR.OO.A002CA.01

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This Audemars Piguet Royal Oak Offshore Selfwinding Chronograph Ceramic Rose Gold Grey Dial is a 44mm masterpiece from AP, featuring a rose gold and black ceramic design with a smoked grey mega tapisserie dial.

  • Condition: like new
  • Case size: 44mm
  • Water resistance: 100m (10ATM)
  • Movement caliber: 3126/3840
Posted at
Apr 1, 2026, 8:36 AM
Active
[WTS] Audemars Piguet Royal Oak Offshore “Volcano” 26170ST with Extra OEM Strap & Brand New AP Box

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This watch is a bold pre-ceramic Offshore icon with a 42mm steel case and black Méga Tapisserie dial, making it a statement piece among collectors.

  • Condition: Excellent
  • Case size: 42mm diameter
  • Dial color: black
  • Movement: Caliber 3126/3840 automatic chronograph
Posted at
Mar 30, 2026, 3:27 PM
Active