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] 2024 Audemars Piguet Royal Oak Chronograph 26240CE — Brand New Condition, Box & Papers

2024 Audemars Piguet Royal Oak Chronograph 26240CE — Brand New Condition, Box & Papers

Audemars Piguet - 26240CE · $112,000
The Audemars Piguet Royal Oak Chronograph showcases the iconic Royal Oak design executed in full black ceramic, delivering a bold yet refined presence.

  • Condition: Brand new condition
  • Size: 41mm diameter
  • Length: 51.4mm lug to lug
  • Thickness: 12.4mm thick
Posted at
Feb 11, 2026, 8:06 AM
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

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

  • Condition: Like new with no signs of wear
  • Case size: 42mm
  • Case thickness: 15.3mm
  • Water resistance: 100m (10 ATM)
Posted at
Feb 10, 2026, 9:13 AM
Active
[WTS] Vintage Seiko "Royal Oak" in perfect working order and good condition allover. Only watch no Box Papers. Asking 650$ including shipping

Vintage Seiko "Royal Oak" in perfect working order and good condition allover. Only watch no Box Papers. Asking 650$ including shipping

Seiko · $650
a vintage Seiko watch in good condition, described as perfect working order.

  • Condition: good
Posted at
Feb 9, 2026, 3:50 AM
Active
[WTS] Audemars Piguet Royal Oak Offshore 25940SK Rubberclad

Audemars Piguet Royal Oak Offshore 25940SK Rubberclad

A Royal Oak Offshore watch with a Rubberclad design, it's in good working condition and includes a Horus strap.

  • Condition: Pre-Owned
  • Year: UNK
  • Contents: Watch Only
  • Strap value: 15,000
Posted at
Feb 8, 2026, 7:42 PM
Active
[WTS] Audemars Piguet Royal Oak Offshore 26176FO Bumblebee

Audemars Piguet Royal Oak Offshore 26176FO Bumblebee

Audemars Piguet - 26176FO · $16,000
This Audemars Piguet Royal Oak Offshore Bumble Bee is a pre-owned watch that runs and functions with no issues.

  • Condition: Pre-Owned
  • Location: Located in Tennessee
Posted at
Feb 8, 2026, 7:40 PM
Active
[WTS] Audemars Piguet Royal Oak 15510OR 2022 50th Anniversary Full Set

Audemars Piguet Royal Oak 15510OR 2022 50th Anniversary Full Set

Audemars Piguet - 15510OR · $95,000
This is an Audemars Piguet Royal Oak 50th Anniversary watch from 2022, a significant milestone model. It comes with all original box and papers, and the seller is based in Tennessee.

  • Condition: Excellent
  • Year Of Production: 2022
Posted at
Feb 8, 2026, 7:00 PM
Active
[WTS] Audemars Piguet Royal Oak Offshore - $14,750

Audemars Piguet Royal Oak Offshore - $14,750

This is a white dial Audemars Piguet Royal Oak Offshore for sale. The watch has very few marks, which take away from its excellent condition.

  • Condition: Very Good
  • Payment Methods: crypto, Zelle, Venmo
Posted at
Feb 7, 2026, 4:44 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 quartz-powered chronograph watch with date display, alarm functions, and an approximately 44mm case. It comes on its original bracelet and features clear signs of wear adding to its vintage character.

  • Condition: Poor condition with signs of wear and fading
  • Case size: approximately 44mm
  • Bracelet size range: fits wrists up to 8 inches
Posted at
Feb 7, 2026, 3:14 AM
Active