Audemars Piguet Royal Oak Royal Oak 25554 Perpetual Calendar

Reference 25554ST.O.0344ST.01

Audemars Piguet Royal Oak 25554 Perpetual Calendar

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

Audemars Piguet - 26405NR.OO.A002CA.01 · $47,495

This watch is a strong, attention-grabbing piece from AP with a beautiful rose gold and black ceramic design. It features a smoked grey dial and comes in its original outer box, inner wood box, booklets, and warranty card.

Condition: like new
Case Size: 44mm diameter
Movement Caliber: 3126/3840
Power Reserve: 50 hours

Posted at

Jan 2, 2026, 8:42 AM

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Audemars Piguet Royal Oak Chronograph Yellow Gold Green Dial 41mm 26331BA.OO.1220BA.02

Audemars Piguet - 26331BA.OO.1220BA.02 · $195,000

This stunning Royal Oak shines in yellow gold with a rich green dial, one of only 125 pieces ever made.

Condition: like new
Case Size: 41mm diameter
Case Thickness: 11mm height
Movement Type: Mechanical (Automatic)

Posted at

Jan 2, 2026, 8:37 AM

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Audemars Piguet Royal Oak Chronograph 41mm Rose Gold Brown 26331OR

Audemars Piguet - 26331OR.OO.D821CR.01 | 26331OR · $54,300

A Royal Oak Chronograph in rose gold with a brown dial and 41mm case, featuring a self-winding chronograph movement.

Condition: Excellent condition with light wear on the case, bezel, and clasp
Case size: 41mm diameter
Movement type: selfwinding chronograph
Power reserve: 40 hours

Posted at

Jan 1, 2026, 4:28 PM

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Audemars Piguet AP Royal Oak Tapisserie Octagon Key Ring (Keychain) Silver Pre-Owned, see pics for condition

Audemars Piguet - null · $7,500

Model type: Royal Oak Tapisserie Octagon Key Ring (Keychain)
Material: Silver

Posted at

Jan 1, 2026, 9:36 AM

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[US] Audemars Piguet Royal Oak 41mm White Silver Dial Stainless Steel AP 15400ST

Audemars Piguet - 15400ST

Posted at

Dec 30, 2025, 2:59 PM

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[US] Audemars Piguet Royal Oak Selfwinding 39mm Rare Blue Dial Stainless Steel 15300st

Audemars Piguet - 15300ST

The watch is an Audemars Piguet Royal Oak Selfwinding 39mm with a rare blue dial and stainless steel case.

Case material: Stainless Steel
Diameter: 39mm

Posted at

Dec 30, 2025, 2:55 PM

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

Audemars Piguet - 26238CD.OO.1300CD.01 · $129,995

The Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 is a bold design with an unmistakable Offshore character, featuring a 42mm case and in-house flyback chronograph movement.

Condition: Like new
Case size: 42 mm
Case material: Blue ceramic with titanium caseback
Dial color: Blue

Posted at

Dec 30, 2025, 9:01 AM

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Audemars Piguet Royal Oak Offshore "Panda" | White Dial Ref. 26170ST.OO.D101CR.02 | 42mm | Stainless Steel | W/ Box | White Dial | Red Accents

Audemars Piguet - 26170ST.OO.D101CR.02 · $17,840

The Audemars Piguet Royal Oak Offshore 'Panda' features a white dial with black sub-dials and red chronograph hands, creating a dynamic visual tension. The 42mm stainless steel case houses the Manufacture 3126 / 3840 automatic movement with 50-hour power reserve and hacking seconds function.

Condition: Excellent (9/10)
Case material: Stainless Steel
Diameter: 42mm

Posted at

Dec 29, 2025, 6:27 PM

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Audemars Piguet Royal Oak Offshore "Elephant" | Slate Gray Dial Ref. 26470ST.OO.A104CR.01 | 42mm | Stainless Steel | Full Set | Slate Gray Dial

Audemars Piguet - 26470ST.OO.A104CR.01 · $22,850

This Audemars Piguet Royal Oak Offshore features a slate gray dial, black sub-dials, and thinned Arabic numerals on a 42mm stainless steel case with a Manufacture Calibre 3126 / 3840 automatic movement.

Case diameter: 42mm
Material: Stainless Steel
Movement: Manufacture Calibre 3126 / 3840

Posted at

Dec 29, 2025, 6:25 PM

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