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

[US] Audemars Piguet Royal Oak Offshore Chronograph 42mm Black Dial ‘Black Themes’ AP Beast - 26170ST Full Set - $22,875

Audemars Piguet - 26170ST · $22,875

Audemars Piguet Royal Oak Offshore Chronograph in 42mm size with a black dial.

Set: full set
Size: 42mm case diameter

Posted at

Mar 24, 2026, 5:20 PM

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Audemars Piguet Royal Oak Offshore Panda 26170ST

Audemars Piguet - 26170ST

Posted at

Mar 24, 2026, 11:01 AM

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[US] Audemars Piguet Royal Oak ‘Jumbo’ Blue Dial 39mm Stainless Steel 15202st - $63,500

Audemars Piguet - 15202ST · $63,500

a blue dial Royal Oak 'Jumbo' in stainless steel with a 39mm case size.

Posted at

Mar 24, 2026, 10:03 AM

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AP Royal Oak Offshore "Elephant" | Gray Dial Ref. 26470ST.OO.A104CR.01 | 42mm | Stainless Steel | Full Set | 2014

Audemars Piguet - 26470ST.OO.A104CR.01 · $18,500

This is a 2014 Audemars Piguet Royal Oak Offshore "Elephant" with a gray dial and stainless steel case, featuring a chronograph function.

Condition: 8/10
Case size: 42mm diameter
Material: stainless steel
Band status: full set

Posted at

Mar 23, 2026, 9:59 PM

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Audemars Piguet Royal Oak Offshore 26400AU.OO.A002CA.01

Audemars Piguet - 26400AU.OO.A002CA.01 · $23,500

The Audemars Piguet Royal Oak Offshore features a forged carbon fiber case, blending innovation with elegance.

Condition: Excellent condition
Case material: forged carbon fiber
Includes: outer and inner box, warranty card, white AM strap

Posted at

Mar 23, 2026, 4:32 PM

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[US] Audemars Piguet Royal Oak Offshore Chronograph 42mm Titanium AP Beast Gray Dial - 26170TI Full Set - $23,500

Audemars Piguet - 26170TI · $23,500

Audemars Piguet Royal Oak Offshore Chronograph in 42mm titanium case with gray dial.

Diameter: 42mm

Posted at

Mar 23, 2026, 4:24 PM

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[US] Audemars Piguet Royal Oak Offshore Chronograph 42mm Steel “Batman” AP 26470ST - Full Set - $23,500

Audemars Piguet - 26470ST · $23,500

Audemars Piguet Royal Oak Offshore Chronograph 42mm Steel "Batman" AP 26470ST being sold as a full set.

Size: 42mm diameter
Full set: true

Posted at

Mar 23, 2026, 4:19 PM

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[US] Audemars Piguet Royal Oak Offshore Chronograph 42mm Black Dial ‘Black Themes’ AP Beast - 26170ST Full Set - $22,875

Audemars Piguet - 26170ST · $22,875

This Audemars Piguet Royal Oak Offshore Chronograph is a 42mm watch with a black dial, part of the 'Black Themes' collection and known as the AP Beast.