Audemars Piguet Royal Oak Royal Oak Ultra Thin Tourbillon Openworked Stainless Steel

Reference 26518ST.OO.1220ST.01

Audemars Piguet Royal Oak Ultra Thin Tourbillon Openworked Stainless Steel

About this watch

The Audemars Piguet Royal Oak Ultra Thin Tourbillon Openworked is a masterpiece of horology that embodies the pinnacle of luxury watchmaking. This stunning timepiece boasts an open-worked movement, showcasing the intricate beauty of its hand-wound caliber AP 2924 SQ. With a tourbillon escapement and a power reserve of up to 70 hours, this watch is not only a work of art but also a marvel of engineering. Its stainless steel case measures 41mm in diameter and 8.95mm in height, offering a sleek profile that sits comfortably on the wrist. The integrated bracelet design adds to its comfort and style, while the sapphire glass provides scratch-resistance and sophistication. As a limited edition of just 100 units, this watch is truly exclusive, making it a coveted piece for collectors and watch enthusiasts alike. Whether you're looking to make a statement or simply appreciate fine craftsmanship, the Royal Oak Ultra Thin Tourbillon Openworked is sure to impress.

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Key Features

Hand-wound movement with tourbillon escapement
Open-worked dial revealing intricate mechanism
Stainless steel case with 41mm diameter and 8.95mm height
Integrated bracelet design for comfort and style
Sapphire glass for scratch-resistance and sophistication
Limited edition of 100 units
Power reserve up to 70 hours

Specifications

Brand

Audemars Piguet

Family

Royal Oak

Model

Royal Oak Ultra Thin Tourbillon Openworked Stainless Steel

Reference

26518ST.OO.1220ST.01

Movement

ap-2924-sq

Movement Features

Hours, Minutes
Tourbillon Escapement, Skeleton, Power Reserve Indicator

Case

Stainless Steel 41mm

Dial Color

Skeleton

Crystal

Sapphire

Water Resistance

Current Listings

Audemars Piguet Royal Oak Offshore “Pride of Argentina” 50pcs LE, $57.5k

Audemars Piguet - 26365OR.OO.D801CR.01 · $57,500

This limited edition Audemars Piguet Royal Oak Offshore is a unique and rare piece, with only 50 pieces produced.

Condition: Preowned
Limited edition: 50 pieces
Last known msrp: $69,100

Posted at

Apr 28, 2026, 10:50 AM

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1995 Audemars Piguet Royal Oak 120th Anniversary LE ref. 56975ST w/ Box & Extract

Audemars Piguet - 56975ST · $21,800

This is a 1995 Audemars Piguet Royal Oak 120th Anniversary Limited Edition watch in stainless steel with a blue dial. The case shows minimal wear and the bracelet is in fantastic condition.

Condition: Minimal wear, excellent condition overall
Case material: Stainless steel
Diameter: 33 mm
Lug width: 23.5 mm

Posted at

Apr 26, 2026, 9:42 PM

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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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