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

Audemars Piguet Royal Oak Perpetual Calendar Black Ceramic FULL SET 26579CE
The watch features a slate grey dial with black subdials showing the day, date, month, and moon phase. It has a perpetual calendar that automatically adjusts for months of varying lengths and leap years.
- Condition: Mint condition with little to no signs of wear
- Material: Black ceramic case with a brushed finish and polished edges
- Movement: Gold-toned rotor and intricate movement inside
- Functions: Hours,Minutes,Seconds,Day,Date,Month,Year,Leap year,Moon phase

Audemars Piguet Royal Oak Offshore �Brick Beast� Blue Dial FULL SET MINT 26238OR
The Audemars Piguet Royal Oak Offshore Chronograph Blue Brick in Pink Gold features a deep blue Petite Tapisserie dial, pink gold-toned counters, and a brushed case with a transparent caseback. It presents itself with little to no signs of wear and comes as a full set.
- Condition: Mint condition
- Material: 18k pink gold
- Case Size: unknown
- Diameter: unknown

Audemars Piguet Royal Oak Offshore Diver 42mm Japan Limited Edition of 500 Rose
The Audemars Piguet Royal Oak Offshore Diver is a limited edition watch from Japan, featuring rose gold titanium and a 42mm case size.
- Condition: Very Good
- Case Size: 42mm diameter
- Limited Edition: one of 500

Audemars PIGUET ROYAL OAK STEEL 15450ST BLUE DIAL 37MM BOXES PAPERS
A 37mm Audemars Piguet Royal Oak Self Winding in stainless steel with a blue dial, purchased from an Audemars Piguet Boutique in 2018.
- Condition: Excellent Condition
- Bracelet size range: up to 6.75 inches wrist
- Package type: Complete Packages/Set (double boxes)
- Papers included: Yes

2005 Audemars Piguet Royal Oak 15300ST White Dial - Box and Papers
The Royal Oak, designed with a 39mm case size that is often worn slightly larger than traditional round watches. The white and steel case provides clean aesthetics, and the integrated bracelet has no slack.
- Condition: Very sharp
- Case Size: 39mm
- Bracelet Type: Integrated
- Wrist Fit: up to 7.5 inch

Audemars PIGUET ROYAL OAK 15510 STAINLESS STEEL BLUE NUIT DIAL 2023 FULL SET
A 2023 41mm Audemars Piguet Royal Oak self-winding stainless steel watch with a Bleu Nuit, Nuage 50 dial.
- Condition: Excellent, Unpolished Condition
- Diameter: 41mm
- Material: Stainless Steel
UNPOLISHED CASE MINT 2014 Audemars Piguet 15400ST Royal Oak 41mm with Box & Paper
A 2014 Audemars Piguet Royal Oak 41mm watch in excellent condition, featuring a stainless steel case and black dial.
- Condition: Excellent
- Case size: 41mm diameter
- Wrist size: 7 1/2 inches

Audemars Piguet Royal Oak Chronograph White Steel FULL SET MINT 26300ST
The Audemars Piguet Royal Oak Chronograph features a white Grande Tapisserie dial with three subdials, protected by a glare-proof sapphire crystal. It has an elegant stainless steel case with brushed and polished finishes and an iconic octagonal bezel secured with eight hexagonal screws.
- Condition: Mint
- Case size: 41mm diameter
- Materials: Stainless Steel
- Water resistance: 50m depth rating

Audemars Piguet Royal Oak Offshore Ref. 26405CE
The Audemars Piguet Royal Oak Offshore Ref. 26405CE features a 44mm black ceramic and titanium case, making it a unique addition to any collection.
- Case material: black ceramic and titanium
- Size: 44mm