AUDEMARS PIGUET ROYAL OAK PERPETUAL CALENDAR REF. 25820ST04 2000's

Brand

Model / Reference

Type

Period

Case

Caseback

Water resistance

Construction

Movement

Caliber

Complication

Functions

Dial

Crystal

Bracelet

Set

Notes

Condition

Description

Audemars Piguet

Royal Oak Perpetual Calendar ref. 25820ST.OO.0944ST.05

Complicated wristwatch

1990s–2000s

Stainless steel, octagonal Royal Oak case

Sapphire crystal

2 ATM

Integrated bracelet design

Automatic

In-house calibre 2120/2802

Perpetual calendar

Day, date, month, leap year, moonphase

Blue “Grande Tapisserie” dial with applied luminous indexes, baton hands, multi-subdial layout, signed Audemars Piguet

Sapphire

Integrated stainless steel bracelet

Full set

Iconic Royal Oak perpetual calendar; ultra-thin high-grade movement; classic blue dial configuration; complete with original accessories

Excellent overall condition

An outstanding Royal Oak Perpetual Calendar reference 25820ST.OO.0944ST.05 produced by Audemars Piguet.

This model represents one of the most iconic expressions of high-end sports watchmaking, combining the timeless Royal Oak design with the complexity of a perpetual calendar.

The stainless steel case and integrated bracelet emphasize both sportiness and elegance, while the blue Grande Tapisserie dial provides depth and excellent legibility. The applied indexes and baton hands with luminous material enhance its refined yet technical appearance.

At its heart lies the renowned ultra-thin automatic calibre 2120/2802, one of the most respected perpetual calendar movements ever produced. It displays day, date, month, leap year and moonphase, automatically accounting for calendar irregularities.

Offered as a full set and preserved in excellent overall condition, this example represents a perfect blend of iconic design and haute horlogerie complication.