Audemars Piguet Royal Oak Royal Oak Extra-Thin Openworked Stainless Steel / 50th Anniversary

Reference 16204ST.OO.1240ST.01

About this watch

The Audemars Piguet Royal Oak Extra-Thin Openworked is a masterpiece of horological excellence. Its unique skeleton design showcases the intricate inner workings of the watch, while its stainless steel case and sapphire crystal radiate sophistication. With a diameter of 39.00 mm and a height of just 8.10 mm, this timepiece is designed for comfort and elegance. The open case back allows wearers to admire the complexity of the movement from both sides, while the Audemars Piguet caliber AP 7124 boasts precision and a slim profile. This self-winding movement features a power reserve of 55 hours and water resistance up to 50 meters, making it suitable for various environments. The watch is equipped with a stainless steel bracelet that complements the case beautifully, ensuring a comfortable fit on the wrist. Whether you're dressing up or heading out casually, this watch adapts effortlessly to your outfit, feeling equally at home in a tuxedo as it does with jeans.
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Key Features

  • Audemars Piguet caliber AP 7124 movement
  • Skeletonized stainless steel case
  • Sapphire crystal glass
  • Water resistance up to 50 meters
  • Stainless steel bracelet
  • Power reserve of 55 hours
  • Frequency: 28,800 vibrations per hour

Specifications

Brand
Audemars Piguet
Family
Royal Oak
Model
Royal Oak Extra-Thin Openworked Stainless Steel / 50th Anniversary
Reference
16204ST.OO.1240ST.01
Movement
ap-7124
Movement Features
  • Hours, Minutes
Case
Stainless Steel 39mm
Dial Color
Skeleton
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] 2017 Audemars Piguet Royal Oak 41 White 15400ST — Like New Condition, Inner Box & Papers

2017 Audemars Piguet Royal Oak 41 White 15400ST — Like New Condition, Inner Box & Papers

Audemars Piguet - 15400ST · $33,000
The Audemars Piguet Royal Oak 41mm White Dial embodies the essence of modern luxury with its distinctive design and impeccable craftsmanship, featuring a Grande Tapisserie white dial, applied hour markers, and integrated stainless steel bracelet.

  • Condition: Like new condition
  • Size: 41mm diameter
  • Lug to lug length: 51mm
  • Thickness: 9.8mm
Posted at
Nov 12, 2025, 8:02 AM
Active
[WTS] [WTS] Audemars Piguet Royal Oak Nick Faldo LE 36mm Steel 15190SP.OO.0789ST.01 Full Set

[WTS] Audemars Piguet Royal Oak Nick Faldo LE 36mm Steel 15190SP.OO.0789ST.01 Full Set

This Audemars Piguet Royal Oak Nick Faldo Limited Edition features a stainless steel case and black dial.

  • Condition: Nice preowned condition with light scratches, needs service or regulation
  • Case Dimensions: 36mm diameter
  • Max Wrist Size: 7.5 inches
Posted at
Nov 11, 2025, 7:29 PM
Active
[WTS] Audemars Piguet AP Royal Oak Offshore Navy Chronograph 42mm Blue Dial 26470ST

Audemars Piguet AP Royal Oak Offshore Navy Chronograph 42mm Blue Dial 26470ST

The AP Royal Oak Offshore Navy in 42mm is a versatile offshore model with aggressive Gen 2 case profiling and dial facelift, featuring a stainless steel case and Calibre 3126/3840 movement.

  • Condition: Very good pre-owned condition with light wear on the case and bezel consistent with age and use
  • Case size: 42mm
  • Water resistance: no specific depth rating mentioned
  • Movement type: Calibre 3126/3840
Posted at
Nov 11, 2025, 6:54 PM
Active
[WTS] [US] Audemars Piguet Royal Oak Offshore Chronograph 42mm Blue “Beast” - AP 26237ST Full Set

[US] Audemars Piguet Royal Oak Offshore Chronograph 42mm Blue “Beast” - AP 26237ST Full Set

The Royal Oak Offshore Chronograph 42mm Blue 'Beast' is a high-end timepiece featuring a blue dial and a stainless steel case.

  • Movement: Calibre 3126/3840 movement
Posted at
Nov 11, 2025, 1:24 PM
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[WTS] AP Royal Oak Offshore Box & Papers Great Condition 26420TI.OO.A027CA.01

AP Royal Oak Offshore Box & Papers Great Condition 26420TI.OO.A027CA.01

This is a clean example of a hard-to-find titanium Offshore that wears beautifully and has great wrist presence without the weight of steel.

  • Condition: Excellent overall
  • Material: Titanium
  • Diameter: 43mm
  • Case Material: Titanium
Posted at
Nov 10, 2025, 8:06 PM
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[WTS] 2023 Audemars Piguet Royal Oak Offshore Chronograph 26238ST.OO.A340CA.01 Baby Blue Dial w/ Box, Archives, & Extra Strap

2023 Audemars Piguet Royal Oak Offshore Chronograph 26238ST.OO.A340CA.01 Baby Blue Dial w/ Box, Archives, & Extra Strap

A 2023 Audemars Piguet Royal Oak Offshore chronograph featuring a baby blue tappiserie dial and two strap options, one of which is a brand new factory white rubber strap.

  • Condition: Excellent pre-owned condition
  • Case size: 42mm diameter
  • Band material: baby blue & white rubber straps
  • Clasp type: AP tang buckle
Posted at
Nov 10, 2025, 6:42 PM
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[WTS] AP royal oak ref. 6009SA - 28x38mm quartz. Amazing condition, $9700 shipped. No trades.

AP royal oak ref. 6009SA - 28x38mm quartz. Amazing condition, $9700 shipped. No trades.

Audemars Piguet - 6009SA · $9,700
The watch is a quartz version of the Royal Oak in a 28x38mm case.

  • Condition: Amazing
  • Case Size: 28x38mm
Posted at
Nov 10, 2025, 5:15 PM
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[WTS] Audemars Piguet Royal Oak Offshore Chronograph 42mm Stainless Steel “Batman” on hornback strap - 2020 Complete set

Audemars Piguet Royal Oak Offshore Chronograph 42mm Stainless Steel “Batman” on hornback strap - 2020 Complete set

This stunning Audemars Piguet Royal Oak Offshore Chronograph features a black dial with navy subdials, a 42mm stainless steel case, and a matching hornback leather strap. It's powered by the Calibre 3126 / 3840 movement, has a 50-hour power reserve, sapphire caseback, and signature “Méga Tapisserie” dial texture.

  • Condition: Excellent overall
  • Case size: 42mm diameter
  • Water resistance: 100m depth rating
  • Movement: AP Calibre 3126 / 3840 automatic chronograph
Posted at
Nov 10, 2025, 10:08 AM
Active
[WTS] Audemars Piguet Royal Oak Offshore 42mm ref 26470ST Box & Papers!

Audemars Piguet Royal Oak Offshore 42mm ref 26470ST Box & Papers!

This Audemars Piguet Royal Oak Offshore features a 42mm stainless steel case with an octagonal bezel, black dial with red accents and luminous Arabic numerals, chronograph subdials at 6, 9, and 12 o'clock, date window at 3 o'clock, and a rubber strap secured by a pin buckle.

  • Condition: Very good condition
  • Case size: 42mm
  • Strap material: Rubber
Posted at
Nov 10, 2025, 12:01 AM
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