Audemars Piguet Royal Oak Royal Oak Perpetual Calendar Openworked 41 150th Anniversary

Reference 26585XT.OO.1220XT.01

Audemars Piguet Royal Oak Perpetual Calendar Openworked 41 150th Anniversary

About this watch

The Royal Oak Perpetual Calendar Openworked ref. 26585XT.OO.1220XT.01 debuted in 2025, marking 150th anniversary of Audemars Piguet, and the end of of caliber AP 5135 - which is dressed-up for the occasion, The 41 mm case combines a bezel and caseback frame in BMG (Bulk Metallic Glass) with a titanium case middle and screw-locked crown.

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Specifications

Brand

Audemars Piguet

Family

Royal Oak

Model

Royal Oak Perpetual Calendar Openworked 41 150th Anniversary

Reference

26585XT.OO.1220XT.01

Movement

ap-5135

Movement Features

Hours, Minutes
Date, Day, Leap Year, Month, Week Indicator
Moonphase

Case

41mm

Dial Color

Skeleton

Crystal

Sapphire

Water Resistance

Current Listings

Audemars Piguet Royal Oak Offshore 42MM “Safari” - Ref 26170ST.OO.D091CR.01 (EXCELLENT COMPLETE SET W/ EXTRAS)

Audemars Piguet - 26170ST.OO.D091CR.01 · $16,550

This 42MM Audemars Piguet Royal Oak Offshore ‘Safari’ is in excellent condition with little to no signs of wear, and all functions are working properly.

Condition: Excellent pre-owned condition with little to no signs of wear
Strap Count: 7
Straps: [object Object]
Boxes: [object Object]

Posted at

Apr 14, 2026, 6:30 PM

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2013 Audemars Piguet Royal Oak Chronograph 42mm 26170ST — Excellent Condition, Box & Papers

Audemars Piguet - 26170ST · $20,500

The Audemars Piguet Royal Oak Chronograph 42mm features a crisp white dial, blue chronograph subdials, and a stainless steel case with an octagonal bezel. This watch has a bold and iconic design, combining sport and practicality.

Condition: Excellent condition with light signs of wear
Case size: 42mm diameter
Lug to lug: 54mm
Thickness: 14mm

Posted at

Apr 14, 2026, 9:39 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

This 44mm Royal Oak Tourbillon Chronograph features a black 'Méga Tapisserie' dial and exposed tourbillon at 6 o'clock, with a rubber-clad bezel providing an industrial contrast against the brushed stainless steel case.

Condition: Excellent condition with little to no signs of wear
Case size: 44mm
Case thickness: 13.2mm
Movement caliber: 2889

Posted at

Apr 13, 2026, 8:22 AM

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Audemars Piguet Royal Oak Offshore Chronograph, 26170ST.OO.D101CR.03 ♦️Lightly Used Undated♦️

Audemars Piguet - 26170ST.OO.D101CR.03 · $17,981

This is a black dial Audemars Piguet Royal Oak Offshore Chronograph, a model known for its sporty and elegant design, featuring a rubber strap with a DB buckle.

Condition: Lightly Used
Band type: Rubber
Buckle type: DB buckle

Posted at

Apr 13, 2026, 3:36 AM

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1995 Audemars Piguet Royal Oak 120th Anniversary LE ref. 56975ST w/ Box & Extract

Audemars Piguet - 56975ST · $21,800

This is a rare 1995 Audemars Piguet Royal Oak 120th Anniversary LE watch with a stainless steel bracelet, blue dial and tritium lume. The watch has been manually observed to keep accurate time and all functions are working as expected.

Condition: Minimal wear, excellent condition overall
Case Diameter: 33mm
Lug Width: 23.5mm
Thickness: 5.8mm

Posted at

Apr 12, 2026, 6:21 PM

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Audemars Piguet Royal Oak Offshore 42mm Chronograph Vampire Box & Strap 26470ST

Audemars Piguet - 26470ST · $19,950

The Audemars Piguet Royal Oak Offshore Chronograph 'Vampire' ref. 26470ST is a highly sought-after model with a bold design and 42mm size.

Condition: Good overall condition with minimal visible scratches
Case size: 42mm
Movement type: Automatic
Crystal material: Sapphire

Posted at

Apr 11, 2026, 1:40 AM

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Audemars Piguet Royal Oak Chrono Black 26240st, New 2026 Full Kit $62.5k

Audemars Piguet - 26240ST · $62,500

The watch being listed is an Audemars Piguet Royal Oak Chrono Black, a high-end luxury timepiece with a black dial. It features a chronograph function and comes with a full kit, including the box, warranty, and manuals.

Condition: Brand New
Country of origin: Switzerland
Shipping from: Singapore

Posted at

Apr 10, 2026, 12:56 PM

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Audemars Piguet Lady Royal Oak Quartz – BOX & PAPERS – 67651ST

Audemars Piguet - 67651ST.ZZ.1261ST.01 · $39,000

The Lady Royal Oak Quartz features a silver dial, 40 diamond bezel, and a stainless steel case diameter of 33mm.

Condition: Excellent condition, little to no visible wear
Movement: Cal 2713 Quartz
Case material: Stainless steel with 40 brilliant-cut diamonds, ~0.71 carats on the bezel
Case diameter: 33-millimeter

Posted at

Apr 10, 2026, 12:05 PM

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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

This Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 is a brand-new 2025 release with an in-house flyback chronograph movement, precision, and a 70-hour reserve. The watch features a bold design, unmistakable Offshore character, and serious presence.

Condition: Like new
Case size: 42mm
Case thickness: 15.3mm
Water resistance: 100m (10 ATM)

Posted at

Apr 9, 2026, 8:32 AM

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