Audemars Piguet Royal Oak Royal Oak Ultra Thin Tourbillon Openworked Yellow Gold / Boutique Edition

Reference 26513BA.OO.1220BA.01

About this watch

The Audemars Piguet Royal Oak Ultra Thin Tourbillon Openworked Yellow Gold / Boutique Edition is a breathtaking blend of design, engineering, and exclusivity. Crafted from 18k yellow gold, this limited-edition masterpiece boasts a skeletonized dial that allows you to peer into the heart of the watch, revealing the intricate workings of the AP 2924 SQ caliber hand-wound movement. With a power reserve of 70 hours, this timepiece is not just a statement piece but also a testament to mechanical excellence. The tourbillon escapement compensates for gravitational errors in timekeeping, elevating the entire experience. This watch strikes the perfect balance between presence and wearability, making it suitable for everyday wear with a water resistance of 50 meters. As one of only 40 units produced, owning this piece is not just about having a watch but being part of a select group of collectors who appreciate the finer things in life.

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Key Features

18k yellow gold case
Skeletonized dial with intricate movement display
AP 2924 SQ caliber hand-wound movement
Tourbillon escapement for precision timekeeping
Water resistance up to 50 meters
Limited edition of only 40 units produced
Diameter: 41.00 mm, Height: 8.85 mm

Specifications

Brand

Audemars Piguet

Family

Royal Oak

Model

Royal Oak Ultra Thin Tourbillon Openworked Yellow Gold / Boutique Edition

Reference

26513BA.OO.1220BA.01

Movement

ap-2924-sq

Movement Features

Hours, Minutes
Tourbillon Escapement, Skeleton, Power Reserve Indicator

Case

Yellow Gold 41mm

Dial Color

Skeleton

Crystal

Sapphire

Water Resistance

Current Listings

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

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

This Audemars Piguet Royal Oak Offshore Diver is a 42mm timepiece in Funky Green, featuring a fixed octagonal stainless steel bezel with an inner diving scale, automatic movement, and a water resistance of 300 meters.

Condition: Excellent pre-owned condition
Case diameter: 42mm
Water resistance: 300m
Power reserve: 60 Hours

Posted at

Mar 27, 2026, 12:51 PM

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Audemars Piguet Royal Oak Offshore Ref: 26238ti 🔥Preowned 2022, $30.5k+✈️🔥

Audemars Piguet - 26238ti.OO.A056CA.01 · $30,500

This 2022 Audemars Piguet Royal Oak Offshore comes with a box, warranty, and manuals.

Condition: Preowned
Case size: 44mm diameter
Location shipped from: Singapore

Posted at

Mar 27, 2026, 9:33 AM

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Audemars Piguet Royal Oak Tourbillon Chronograph 44mm 26377SK.OO.D002CA.01 Complete Set

Audemars Piguet - 26377SK.OO.D002CA.01 · $114,195

A 44mm Royal Oak Tourbillon Chronograph featuring a black 'Méga Tapisserie' dial, exposed tourbillon at 6 o'clock, and rubber-clad bezel.

Condition: Excellent
Movement: Mechanical (Manual) Calibre 2889
Case Size: 44mm diameter
Case Thickness: 13.2mm

Posted at

Mar 27, 2026, 9:23 AM

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2014 Audemars Piguet Royal Oak 41, Blue Dial 15400ST — Like New Condition, Box & Papers

Audemars Piguet - 15400ST · $41,000

The Audemars Piguet Royal Oak 15400ST is a modern classic featuring a 41mm stainless steel case with an octagonal bezel and integrated bracelet. Its blue dial adds depth and character, complemented by white gold hour markers and hands for excellent legibility.

Condition: Like new condition
Case size: 41mm diameter
Lug to lug: 51mm
Thickness: 9.8mm

Posted at

Mar 26, 2026, 9:06 AM

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2023 Audemars Piguet Royal Oak Offshore Diver, Blue Dial 15720ST — Like New Condition, Box & Papers

Audemars Piguet - 15720ST · $25,000

The Audemars Piguet Royal Oak Offshore Diver 15720ST is a bold, modern dive watch that combines the rugged Offshore aesthetic with refined finishing. Featuring a vibrant blue “Méga Tapisserie” dial with an inner rotating dive bezel, it delivers strong visual impact and excellent functionality.

Condition: Like new condition
Case Size: 42mm diameter
Lug To Lug: 52mm
Thickness: 14.2mm

Posted at

Mar 25, 2026, 9:32 AM

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2014 Audemars Piguet Royal Oak Chronograph, Converted 26320OR — Like New Condition, Box & Papers

Audemars Piguet - 26320OR · $74,000

This 2014 Audemars Piguet Royal Oak Chronograph features a unique converted configuration with an integrated bracelet design, and comes complete with its original box and papers.

Condition: Like new condition
Case Diameter: 41mm
Lug To Lug: 53mm
Thickness: 14mm

Posted at

Mar 25, 2026, 9:22 AM

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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 · $120,995

The Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 is a brand-new 2025 release with a bold design and unmistakable Offshore character, featuring a blue ceramic build and in-house flyback chronograph movement.

Condition: like new condition
Movement caliber: Calibre 4404
Power reserve: 70 hours
Case size: 42 mm

Posted at

Mar 25, 2026, 9:01 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 is a bold timepiece with a beautiful smoked grey dial.

Condition: Like new
Case size: 44mm diameter
Movement caliber: 3126/3840
Power reserve: 50 hours

Posted at

Mar 25, 2026, 8:56 AM

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