Audemars Piguet Royal Oak Royal Oak Openworked 15203 Extra-Thin 40th Anniversary Platinum

Reference 15203PT.OO.1240PT.01

About this watch

The Audemars Piguet Royal Oak Openworked 15203PT.OO.1240PT.01 is a masterpiece of luxury watchmaking, embodying excellence in craftsmanship and style. Encased in platinum, this limited edition timepiece celebrates the 40th anniversary of the Royal Oak line with its stunning openworked dial showcasing the intricate workings of its movement. The Audemars Piguet caliber AP 5122, with its slim self-winding mechanism, is a marvel of engineering, boasting 36 jewels and a power reserve of 40 hours. This watch's blend of artistic design, engineering excellence, and limited availability makes it a coveted piece for any watch enthusiast, elevating your timepiece game to new heights.
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Key Features

  • Platinum case with stunning openworked dial
  • Audemars Piguet caliber AP 5122 automatic movement
  • Limited edition of only 40 units produced
  • Water resistance of 50 meters
  • Skeletonized dial showcasing intricate mechanics
  • Sapphire crystal and platinum construction
  • Manual finish on bridges and mainplate for artistry

Specifications

Brand
Audemars Piguet
Family
Royal Oak
Model
Royal Oak Openworked 15203 Extra-Thin 40th Anniversary Platinum
Reference
15203PT.OO.1240PT.01
Movement
ap-5122
Movement Features
  • Hours, Minutes
  • Date
Case
39mm
Dial Color
Skeleton
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Audemars Piguet Royal Oak Offshore Selfwinding Chronograph Ceramic Rose Gold Grey Dial 44mm Box & Papers 26405NR.OO.A002CA.01

Audemars Piguet Royal Oak Offshore Selfwinding Chronograph Ceramic Rose Gold Grey Dial 44mm Box & Papers 26405NR.OO.A002CA.01

The watch is a 44mm rose gold and black ceramic masterpiece from AP, featuring a smoked grey mega tapisserie dial, mechanical movement, and 100m water resistance.

  • Condition: Like new
  • Movement Caliber: 3126/3840
  • Case Size: 44mm diameter
  • Water Resistance: 100m (10ATM)
Posted at
Jan 9, 2026, 8:10 AM
Active
[WTS] Audemars Piguet Royal Oak Chronograph Yellow Gold Green Dial 41mm 26331BA.OO.1220BA.02

Audemars Piguet Royal Oak Chronograph Yellow Gold Green Dial 41mm 26331BA.OO.1220BA.02

This stunning Audemars Piguet Royal Oak Chronograph features a yellow gold case with a rich green dial, one of only 125 pieces ever made.

  • Condition: like new condition
  • Case diameter: 41mm
  • Case thickness: 11mm
  • Water resistance depth rating: 50m (5 ATM)
Posted at
Jan 9, 2026, 8:06 AM
Active
[WTS] AP Royal Oak Offshore Diver 15706AU – Forged Carbon – 42mm – Watch Only – Good Condition – 19,500 Shipped – Trades Welcome

AP Royal Oak Offshore Diver 15706AU – Forged Carbon – 42mm – Watch Only – Good Condition – 19,500 Shipped – Trades Welcome

Audemars Piguet - 15706AU · $19,500
This is a Royal Oak Offshore Diver Ref. 15706AU, made of forged-carbon and featuring a black ceramic bezel and Méga Tapisserie dial.

  • Condition: Good condition with light carbon wear
  • Case material: Forged Carbon
  • Case size: 42mm diameter
  • Bezel type: Black ceramic bezel
Posted at
Jan 8, 2026, 3:28 PM
Active
[WTS] [US] Audemars Piguet Royal Oak Offshore Chronograph 44mm Ceramic - 26405ce

[US] Audemars Piguet Royal Oak Offshore Chronograph 44mm Ceramic - 26405ce

Audemars Piguet - 26405CE · $59,900
a luxury watch listing for an Audemars Piguet Royal Oak Offshore Chronograph 44mm Ceramic model

  • Case material: ceramic
  • Size: 44mm diameter
Posted at
Jan 6, 2026, 3:31 PM
Active
[WTS] Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 26238CD.OO.1300CD.01 Complete Set

Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 26238CD.OO.1300CD.01 Complete Set

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

  • Condition: like new
  • Case size: 42mm diameter
  • Case material: blue ceramic with titanium caseback
  • Bezel material: ceramic
Posted at
Jan 6, 2026, 8:59 AM
Active
[WTS] 1988 Seiko Quartz Chronograph “Royal Oak” Ref. 7A38-7280 | $315

1988 Seiko Quartz Chronograph “Royal Oak” Ref. 7A38-7280 | $315

Seiko - 7A38-7280 · $315
The Seiko Quartz Chronograph Ref. 7A38-7280 is a two-tone, angular watch inspired by the Royal Oak design, powered by the jewelled and fully serviceable caliber 7A38 quartz movement.

  • Condition: Good condition for its age with some markings on the case and bracelet
  • Movement Type: quartz
  • Jewels: 15
Posted at
Jan 5, 2026, 12:38 PM
Active
[WTS] Seiko AP Royal Oak

Seiko AP Royal Oak

Seiko · $199
a listing for a Seiko AP Royal Oak but this appears to be incorrect as there is no such model from Seiko, it is actually the Audemars Piguet Royal Oak which is not made by Seiko and the correct price and features are unknown. The seller claims it works as expected.

  • Condition: Working as it should
  • Payment methods: Venmo, PayPal
Posted at
Jan 4, 2026, 4:02 PM
Active
[WTS] Audemars Piguet Royal Oak Offshore Selfwinding Chronograph Ceramic Rose Gold Grey Dial 44mm Box & Papers 26405NR.OO.A002CA.01

Audemars Piguet Royal Oak Offshore Selfwinding Chronograph Ceramic Rose Gold Grey Dial 44mm Box & Papers 26405NR.OO.A002CA.01

This watch is a strong, attention-grabbing piece from AP with a beautiful rose gold and black ceramic design. It features a smoked grey dial and comes in its original outer box, inner wood box, booklets, and warranty card.

  • Condition: like new
  • Case Size: 44mm diameter
  • Movement Caliber: 3126/3840
  • Power Reserve: 50 hours
Posted at
Jan 2, 2026, 8:42 AM
Active
[WTS] Audemars Piguet Royal Oak Chronograph Yellow Gold Green Dial 41mm 26331BA.OO.1220BA.02

Audemars Piguet Royal Oak Chronograph Yellow Gold Green Dial 41mm 26331BA.OO.1220BA.02

This stunning Royal Oak shines in yellow gold with a rich green dial, one of only 125 pieces ever made.

  • Condition: like new
  • Case Size: 41mm diameter
  • Case Thickness: 11mm height
  • Movement Type: Mechanical (Automatic)
Posted at
Jan 2, 2026, 8:37 AM
Active