Audemars Piguet Royal Oak Royal Oak Perpetual Calendar 38 Stainless Steel / Light Blue

Reference 26684ST.OO.1356ST.01

About this watch

The Audemars Piguet Royal Oak Perpetual Calendar Automatic 26684ST.OO.1356ST.01 debuted in 2025. This reference is housed in a stainless steel case of 38 mm with a thickness of 9.4 mm. Both front and back are fitted with glareproof sapphire crystals, and water resistance is rated at 50 meters. The integrated stainless steel bracelet is secured with an AP folding clasp. The dial is light blue with the signature Grande Tapisserie pattern. It features tone-on-tone subsidiary dials for the perpetual calendar indications, complemented by white gold applied hour markers and hands with luminescent coating, and a silvery-grey inner bezel. This model is powered by the self-winding caliber 7136, a movement measuring 29.6 mm in diameter and 4.1 mm in height, composed of 413 parts with 41 jewels. It operates at a frequency of 28,800 vph (4 Hz) and has a power reserve of 55 hours. Functions include hours, minutes, perpetual calendar with day, date, month, leap year, and astronomical moon phase. The caliber incorporates three patented mechanisms and is adjusted entirely via the crown, without the need for correction tools.
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Specifications

Brand
Audemars Piguet
Family
Royal Oak
Model
Royal Oak Perpetual Calendar 38 Stainless Steel / Light Blue
Reference
26684ST.OO.1356ST.01
Movement
ap-7136
Movement Features
  • Hours, Minutes
  • Date, Day, Leap Year, Month
  • Moonphase
Case
Stainless Steel 38mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] [WTT] Audemars Piguet Royal Oak Selfwinding 39mm Black Dial 15300ST.OO.1220ST.03 - 9.9/10 - $34,500

[WTT] Audemars Piguet Royal Oak Selfwinding 39mm Black Dial 15300ST.OO.1220ST.03 - 9.9/10 - $34,500

A 2014 Audemars Piguet Royal Oak Selfwinding 39mm black dial watch in remarkable shape for its age, featuring a fully in-house movement and Genta-designed case.

  • Condition: 9.9/10 - virtually flawless with exceptional case and bracelet sharpness
  • Year: 2014
  • Case Condition: remarkable shape for a 2014 piece
Posted at
May 16, 2026, 2:30 PM
Active
[WTS] Audemars Piguet Royal Oak Chronograph Blue Dial 26320ST

Audemars Piguet Royal Oak Chronograph Blue Dial 26320ST

Audemars Piguet - 26320ST · $45,000
This Audemars Piguet Royal Oak Chronograph features a blue dial and comes with an OEM bracelet. It has a caliber 2385 automatic movement and is water resistant to 50M.

  • Condition: Very Good, minor signs of use on the case and minor patina/discoloration around the subdials
  • Case size: 41mm diameter
  • Lug to lug length: 52mm
  • Movement type: caliber 2385 automatic
Posted at
May 16, 2026, 1:33 PM
Active
[WTS] Audemars Piguet Royal Oak Dual Time 26124ST 39mm Blue Dial Complete Set

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Audemars Piguet - 26124ST · $47,000
A very special Audemars Piguet Royal Oak Dual Time, produced for only two years. It comes in a 39mm size with a blue dial and fully linked AP bracelet.

  • Size: 39mm
  • Bracelet type: fully linked AP bracelet
Posted at
May 15, 2026, 9:16 AM
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

A 44mm rose gold and black ceramic Audemars Piguet Royal Oak Offshore Selfwinding Chronograph with a smoked grey dial, available in like new condition.

  • Condition: like new
  • Case size: 44mm diameter
  • Movement type: Mechanical (Automatic)
  • Water resistance: 100M (10ATM)
Posted at
May 15, 2026, 7:58 AM
Active
[WTS] AP Royal Oak Offshore 1000 series SS bracelet UK

AP Royal Oak Offshore 1000 series SS bracelet UK

The seller is listing an Audemars Piguet Royal Oak Offshore 1000 series stainless steel bracelet watch, likely from a reputable source.

  • Uk only: seller's preferred location for sale and shipping
  • Meets included: includes original paperwork or accessories
Posted at
May 13, 2026, 8:54 AM
Active
[WTS] MINT Audemars Piguet Royal Oak Offshore Diver 15710ST 42mm

MINT Audemars Piguet Royal Oak Offshore Diver 15710ST 42mm

Audemars Piguet - 15710ST · $16,900
2015-2021 stainless steel Royal Oak Offshore Diver with a black dial, running strong and all functions working as they should.

  • Condition: MINT
  • Case size: 42mm diameter
  • Dial color: black
Posted at
May 12, 2026, 12:38 PM
Active
[WTS] Audemars Piguet Royal Oak Offshore Limited Edition 26290RO.OO.A001VE.01 ♦️Lightly Used 2010♦️

Audemars Piguet Royal Oak Offshore Limited Edition 26290RO.OO.A001VE.01 ♦️Lightly Used 2010♦️

This Audemars Piguet Royal Oak Offshore Limited Edition is a lightly used model from Q4 2010, featuring the Calibre 65 movement and coming with its full set of box and papers.

  • Condition: Lightly Used
  • Year: 2010
  • Case size: 40mm diameter
  • Calibre: Calibre 65
Posted at
May 11, 2026, 4:49 AM
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[WTS] Audermars Piguet Royal Oak Offshore “Safari” 26170ST.OO.D091CR.01 42mm Stainless Steel Full Set w/ Both Straps

Audermars Piguet Royal Oak Offshore “Safari” 26170ST.OO.D091CR.01 42mm Stainless Steel Full Set w/ Both Straps

A highly collectible 'Safari' edition from the Royal Oak Offshore line, featuring a rugged stainless steel case and a warm ivory dial.

  • Condition: Excellent Pre-owned condition
  • Case size: 42mm diameter
  • Year of production: 2008
  • Movement: AP's In-House Calibre 3120 Automatic Self Winding Chronograph
Posted at
May 11, 2026, 12:06 AM
Active