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

Reference 26518ST.OO.1220ST.01

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
20

Current Listings

[WTS] 1990s Audemars Piguet Royal Oak Dual Time ref. 25730ST - Just serviced by AP!

1990s Audemars Piguet Royal Oak Dual Time ref. 25730ST - Just serviced by AP!

Audemars Piguet - 25730ST · $24,250
This 1990s Audemars Piguet Royal Oak Dual Time ref. 25730ST features a stainless steel case with a black dial and polished hands. It has been recently serviced by Audemars Piguet and is in good working order, with all functions functioning as expected.

  • Condition: Good, normal wear in the form of hairlines, tiny scratches, and micro nicks throughout
  • Case diameter: 36mm
  • Lug width: 23.5mm
  • Thickness: 9.8mm
Posted at
Oct 26, 2025, 5:40 PM
Active
Audemars Piguet Royal Oak Perpetual Calendar Blue White Ceramic MINT 26579CB

Audemars Piguet Royal Oak Perpetual Calendar Blue White Ceramic MINT 26579CB

Audemars Piguet - 26579CB · $306,899
This Audemars Piguet Royal Oak Perpetual Calendar features a blue Grande Tapisserie dial, perpetual calendar function, and is made from white ceramic. It includes hours, minutes, day, date, month, moon phase, leap year, and week indicator functions.

  • Condition: Mint
  • Case material: White ceramic
  • Dial color: Blue
Posted at
Apr 8, 2025, 1:20 PM
Active
Audemars Piguet Royal Oak 39mm White Dial - Mint Condition with Box

Audemars Piguet Royal Oak 39mm White Dial - Mint Condition with Box

This Audemars Piguet Royal Oak features a white dial, iconic octagonal bezel, and signature Tapisserie pattern, making it a true masterpiece of luxury and precision.

  • Condition: Mint Condition
  • Box: Yes, original box included
  • Shipping: Fully insured FedEx Priority Overnight shipping to US addresses included
  • Payment Methods: Wire, cryptocurrency, credit card (+4%)
Posted at
Apr 7, 2025, 8:26 PM
Active
NIB Audemars Piguet Royal Oak Chronograph Rose Gold Green Dial Strap 26240 Full Se

NIB Audemars Piguet Royal Oak Chronograph Rose Gold Green Dial Strap 26240 Full Se

This 41mm Audemars Piguet Royal Oak Chronograph features an in-house automatic movement and a green dial on an 18K rose gold case.

  • Condition: New, unworn (NIB)
  • Case size: 41mm
  • Movement type: Automatic, in-house
Posted at
Apr 7, 2025, 3:20 PM
Active
Audemars PIGUET ROYAL OAK JUMBO ULTRA THIN 15202ST BLUE DIAL 2018 FULL SET

Audemars PIGUET ROYAL OAK JUMBO ULTRA THIN 15202ST BLUE DIAL 2018 FULL SET

A 2018 Audemars Piguet Royal Oak Jumbo Extra-Thin in stainless steel with a blue dial, featuring a 39mm case size.

  • Condition: Excellent Condition
  • Case Size: 39mm
  • Diameter: 39mm
  • Year: 2018
Posted at
Apr 4, 2025, 9:08 PM
Active
2022 Audemars Piguet Ref. 26331ST Royal Oak Chronograph

2022 Audemars Piguet Ref. 26331ST Royal Oak Chronograph

Audemars Piguet - 26331ST · $41,950
2022 Audemars Piguet Ref. 26331ST Royal Oak Chronograph, featuring a 41mm case and blue dial.

  • Condition: Light wear
  • Case size: 41mm
  • Dial color: blue
Posted at
Apr 4, 2025, 11:30 AM
Active
2008 Audemars Piguet 18K YG Royal Oak Chronograph 26068BA Pave Diamond Dial w/ MO

2008 Audemars Piguet 18K YG Royal Oak Chronograph 26068BA Pave Diamond Dial w/ MO

Audemars Piguet - 26068BA · $78,550
The watch features a 39mm 18K yellow gold and diamond case with a pave diamond dial, mother of pearl sub-dials, and an 18K yellow gold folding clasp.

  • Condition: Excellent (unpolished)
  • Case size: 39mm
  • Diameter: 39mm
  • Bezel condition: Excellent (light wear)
Posted at
Apr 4, 2025, 9:34 AM
Active