Audemars Piguet Royal Oak Royal Oak 25820 Perpetual Calendar Platinum / Blue

Reference 25820PT.O.0944PT.01

Audemars Piguet Royal Oak 25820 Perpetual Calendar Platinum / Blue

About this watch

The Audemars Piguet Royal Oak 25820PT.O.0944PT.01 is a masterpiece that embodies the perfect blend of luxury and functionality. The exquisite platinum case gleams under any light, while the blue Grande Tapisserie dial adds a touch of sophistication with its intricate pattern. The stick hands glide smoothly across the dial, powered by the remarkable Audemars Piguet caliber AP 2120 / 2802 movement. This automatic movement boasts a 40-hour power reserve and a frequency of 21,600 beats per hour, ensuring precision and reliability. The perpetual calendar complication is beautifully executed, allowing the watch to know the date, day, leap year, and month without adjustments. The platinum bracelet complements the case perfectly, feeling luxurious against the skin. With a sapphire crystal and water resistance of 20 meters, this watch is resistant to scratches and everyday wear. It's a worthy investment for those who appreciate both beauty and functionality.

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Key Features

Exquisite platinum case
Blue Grande Tapisserie dial with intricate pattern
Audemars Piguet caliber AP 2120 / 2802 movement with 40-hour power reserve
Perpetual calendar complication with date, day, leap year, and month functions
Platinum bracelet for a luxurious feel
Sapphire crystal for scratch resistance
20-meter water resistance

Specifications

Brand

Audemars Piguet

Family

Royal Oak

Model

Royal Oak 25820 Perpetual Calendar Platinum / Blue

Reference

25820PT.O.0944PT.01

Movement

ap-2120-2802

Movement Features

Hours, Minutes
Date, Day, Leap Year, Month, Perpetual Calendar
Moonphase

Case

39mm

Dial Color

Blue

Crystal

Sapphire

Current Listings

Seiko Sports 150 Arlam Chronograph Ref. 7T34-7A10 “Royal Oak” — $550 Shipped

Seiko - 7T34-7A10 · $550

Up for sale is a Seiko chronograph alarm, often nicknamed the “**Seiko Royal Oak**” thanks to its integrated bracelet and octagonal bezel design.

Condition: Honest signs of wear consistent with age
Movement: Seiko 7T34 quartz chronograph (alarm function)
Case size: 41mm x 43mm x 10mm
Bracelet type: Integrated stainless steel bracelet

Posted at

Feb 24, 2026, 2:24 AM

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1983 Seiko Quartz Chronograph “Royal Oak” Ref. 7A38-7020 | $600

Seiko - 7A38-7020 · $600

The Seiko Quartz Chronograph 'Royal Oak' Ref. 7A38-7020 is a rare and highly sought-after timepiece from the 80s, featuring a gray dial with black subdials and a 12-sided bezel.

Condition: Good condition for its age, with some markings on the case and bracelet, mineral crystal scratches.
Case Size: 38.5 x 42.5mm stainless steel case with a thickness of 11.2mm
Movement Type: quartz with 15 jewels
Movement Complications: analog quartz chronograph, day/date complication

Posted at

Feb 23, 2026, 5:34 PM

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

Audemars Piguet - 56975ST · $23,300

A 1995 Audemars Piguet Royal Oak 120th Anniversary LE with blue petite tapisserie dial and stainless steel case.

Condition: Very clean, minimal wear
Case material: Stainless steel
Diameter: 33 mm (case diameter)
Lug width: 23.5 mm

Posted at

Feb 22, 2026, 7:06 PM

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Vintage Seiko Sports 150 – Alarm Chronograph – 😏 “Poor Man’s AP Royal Oak” 😏 – 7T34-7A10 – $245 Shipped

Seiko - 7T34-7A10 · $245

This vintage Seiko Sports 150 is a quartz-powered chronograph with date display and alarm functions, housed in an approximately 44mm case.

Condition: Poor condition with signs of wear and fading
Case size: approximately 44mm diameter
Bracelet length supported: up to 8 inches

Posted at

Feb 21, 2026, 5:38 PM

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Audemars Piguet Royal Oak Offshore Chronograph 42mm Champagne Gold Dial 26470OR.OO.A002CR.01 "Half Brick”

Audemars Piguet - 26470OR.OO.A002CR.01 · $31,950

This listing is for an Audemars Piguet Royal Oak Offshore Chronograph with a champagne gold dial, 42mm case size, and various other features. The watch is described as being in very good condition, with minor flaws noted. Additional details are available upon request.

Condition: Very good, with minor marks and wear
Material: Gold

Posted at

Feb 20, 2026, 10:38 AM

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

Audemars Piguet - 26405NR.OO.A002CA.01 · $47,495

This Audemars Piguet Royal Oak Offshore Selfwinding Chronograph Ceramic Rose Gold Grey Dial is a 44mm rose gold and black ceramic masterpiece with a smoked grey dial, featuring a chronograph, date, small seconds, and water resistance of 100m.

Condition: like new
Case size: 44mm diameter
Case material: ceramic
Bezel material: 18k rose gold

Posted at

Feb 20, 2026, 9:10 AM

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[US] Audemars Piguet Royal Oak ‘Jumbo’ Blue Dial 39mm Stainless Steel 15202st - $63,500

Audemars Piguet - Royal Oak 'Jumbo' Blue Dial 39mm Stainless Steel 15202st · $63,500

This listing is for a used Audemars Piguet Royal Oak 'Jumbo' with a blue dial, made of stainless steel. The watch features a 39mm case size.

Posted at

Feb 19, 2026, 2:37 PM

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Audemars Piguet Royal Oak Offshore 15710ST Complete Set w/Box and Papers

Audemars Piguet - 15710ST · $16,995

This Audemars Piguet Royal Oak Offshore is a stainless steel watch with a white Mega Tapisserie dial and iconic octagonal bezel. It features an automatic Caliber 3120 movement, approximately 60-hour power reserve, and 300m water resistance.

Condition: Excellent Pre-Owned Condition
Case material: stainless steel
Dial type: white Mega Tapisserie
Bezel material: stainless steel with exposed hexagonal screws

Posted at

Feb 18, 2026, 3:52 PM

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2024 Audemars Piguet Royal Oak Chronograph 26240CE — Brand New Condition, Box & Papers

Audemars Piguet - 26240CE · $112,000

The Audemars Piguet Royal Oak Chronograph showcases the iconic Royal Oak design executed in full black ceramic, delivering a bold yet refined presence. Featuring the signature “Grande Tapisserie” dial and in-house flyback chronograph movement, it blends cutting-edge materials with AP’s legendary craftsmanship.

Condition: Brand new
Case Material: Full black ceramic
Diameter: 41mm
Lug To Lug: 51.4mm

Posted at

Feb 18, 2026, 8:06 AM

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