Audemars Piguet Royal Oak Royal Oak Perpetual Calendar Openworked Stainless Steel

Reference 25829ST.OO.0944ST.01

About this watch

The Audemars Piguet Royal Oak Perpetual Calendar Openworked Stainless Steel is a masterpiece of horology, showcasing exquisite craftsmanship and iconic design. This remarkable watch combines artistry with functionality, featuring an openworked dial that reveals the intricate inner workings of its exceptional movement. The 39.00mm case diameter and 9.30mm height strike a perfect balance between presence and subtlety, making it suitable for both formal and casual occasions. Protected by sapphire glass, this watch is not only durable but also offers crystal-clear visibility. With a 40-hour power reserve and a frequency of 21,600 vibrations per hour, the AP caliber AP 2120 / 2802 movement is as reliable as it is beautiful. This timepiece is more than just a luxury item; it's an investment in a legacy that embodies precision, timeless style, and artistry.

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Market Price: $190,845

Key Features

40-hour power reserve
21,600 vibrations per hour frequency
Sapphire glass crystal protection
39mm case diameter
9.30mm height
Openworked dial design
Integrated stainless steel bracelet

Specifications

Brand

Audemars Piguet

Family

Royal Oak

Model

Royal Oak Perpetual Calendar Openworked Stainless Steel

Reference

25829ST.OO.0944ST.01

Movement

ap-2120-2802

Movement Features

Hours, Minutes
Date, Day, Leap Year, Month, Perpetual Calendar
Moonphase

Case

Stainless Steel 39mm

Dial Color

See-through

Crystal

Sapphire

Water Resistance

Current Listings

Credor 9300- Amazing dial, Sapphire, Onyx Crown, Royal Oak-esque bracelet, Made in Japan

This iconic Squared-styled watch features an amazing dial with gilt hands and markers, a Royal Oak-esque H link bracelet, and is made in Japan. It has a 9300 movement, sapphire crystal, onyx crown, and measures 29mm without crown, 38mm lug to lug, and 4 mm height.

Posted at

Apr 25, 2026, 10:12 AM

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Audemars Piguet Royal Oak 37mm Diamonds 15551OR.ZZ.1356OR.04 White 3/2026

Audemars Piguet - 15551OR.ZZ.1356OR.04 · $98,500

A 37mm Audemars Piguet Royal Oak with a white/silver tapestry dial and diamond bezel in rose gold, available as a complete March 2026 set.

Condition: Mint condition
Case size: 37mm
Dial color: white/silver
Bezel type: diamond

Posted at

Apr 24, 2026, 3:05 PM

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AUDEMARS PIGUET Royal Oak Offshore Diver Chrono Orange 26703ST.OO.A070CA.01

Audiveris Piguet - 26703ST.OO.A070CA.01 · $27,500

The AP Royal Oak Offshore Diver Chronograph is a bold and highly functional sports watch that blends the iconic Offshore design with professional diving capability. This example features a striking orange dial with chronograph subdials, paired with an internal rotating dive bezel and a stainless-steel case.

Condition: Excellent
Case material: stainless steel
Band: orange rubber strap

Posted at

Apr 24, 2026, 10:20 AM

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AUDEMARS PIGUET Royal Oak 41mm Chrono White Dial Steel 26320ST.OO.1220ST.02

Audemars Piguet - 26320ST.OO.1220ST.02 · $35,900

This AUDEMARS PIGUET Royal Oak Chronograph features a 41mm case size, crisp white 'Grande Tapisserie' dial, and stainless steel octagonal bezel. It delivers a balanced and sporty aesthetic while maintaining refined finishing.

Condition: Excellent
Case size: 41mm diameter
Water resistance: 30m depth rating

Posted at

Apr 24, 2026, 9:16 AM

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Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 Beige Dial 43mm 26420CD.OO.A029VE.01

Audemars Piguet - 26420CD.OO.A029VE.01 · $86,995

The Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 features a beige dial with a blue ceramic bezel, contrasting blue sub-dials and a matching blue rubber strap. It is powered by the integrated Calibre 4401 movement.

Condition: Brand new
Movement Type: Mechanical (Automatic)
Case Size: 43mm
Water Resistance: 100m depth rating

Posted at

Apr 24, 2026, 8:32 AM

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Audemars Piguet Royal Oak Offshore Diver Stainless Steel Grey Dial 42mm 15720ST.OO.A009CA.01

Audemars Piguet - 15720ST.OO.A009CA.01 · $25,395

The Audemars Piguet Royal Oak Offshore Diver is a rugged evolution of the Royal Oak DNA, built for 300m depth without breaking a sweat.

Condition: Excellent condition with little to no signs of wear
Case size: 42mm diameter
Case thickness: 14.2mm
Case material: Stainless Steel

Posted at

Apr 24, 2026, 8:31 AM

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AUDEMARS PIGUET Royal Oak 37mm Grey Dial Stainless Steel 15450ST.OO.1256ST.02

Audemars Piguet - 15450ST.OO.1256ST.02 · $38,900

A modern classic in the Royal Oak family, this 37mm stainless steel watch features a grey dial and AP's automatic movement. Compact and elegant, it suits both men and women with iconic Royal Oak design cues.

Condition: Excellent
Case size: 37mm
Movement: Automatic

Posted at

Apr 24, 2026, 8:22 AM

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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 · $42,495

This 44mm rose gold and black ceramic Audemars Piguet Royal Oak Offshore Selfwinding Chronograph has a smoked grey dial with a beautiful Mega Tapisserie pattern, making it a stunning timepiece.

Condition: like new
Case Size: 44mm diameter
Case Material: rose gold and ceramic
Dial Color: smoked grey

Posted at

Apr 24, 2026, 8:21 AM

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Audemars Piguet Royal Oak Offshore Diver 42mm Funky Green 15710ST.OO.A038CA.01

Audemars Piguet - 15710ST.OO.A038CA.01 · $32,000

This is a 42mm Audemars Piguet Royal Oak Offshore Diver with a funky green dial, featuring an automatic movement and a water resistance of 300 meters.

Condition: Excellent pre-owned condition
Case diameter: 42mm
Band material: Rubber, Fizzy Lime Green
Bezel material: Stainless Steel with Inner Bezel Diving Scale

Posted at

Apr 23, 2026, 5:11 PM

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