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The Encyclopedia of Horology

Wristwatch · Chronograph wristwatch

Audemars Piguet Royal Oak Chronograph 25860ST

Partially verified

This Audemars Piguet Royal Oak chronograph, reference 25860ST, features a 39 mm stainless steel case and an integrated bracelet. The watch is colloquially dubbed the "Kasparov" after chess player Garry Kasparov, who was an ambassador for the brand. The timepiece is powered by the self-winding caliber 2385, which includes a date function positioned between 4 and 5 o'clock. The dial displays a dark blue "Petit Tapisserie" pattern with recessed sub-dials. The watch construction includes robust, screw-down pushers and a matching setting crown, consistent with the design language of the Royal Oak collection. This example is accompanied by a cardboard service box and an 'Extrait de Registre' document from Audemars Piguet that confirms a register date of 15.04.1999. The integrated bracelet is signed by Gay Frères.

The Audemars Piguet Royal Oak Chronograph reference 25860ST displayed on a wrist.
The Audemars Piguet Royal Oak Chronograph reference 25860ST displayed on a wrist. — Bulang & Sons. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.bulangandsons.com
Category
Wristwatch · Chronograph wristwatch
Maker / attribution
Audemars Piguet
Reference
25860ST
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
1999
Source-reported place
Not established
Source-reported serial
no3xx/E-143xxx

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Dial

The watch features a 39 mm stainless steel case designed with the characteristic Royal Oak aesthetic, including an octagonal bezel secured by screws. The case is equipped with screw-down pushers designed with the same shape as the setting crown. The dial is finished in a dark blue color and features the 'Petit Tapisserie' pattern, a signature motif for this model range.

The dial includes three recessed sub-dials and a date aperture located between the 4 and 5 o'clock markers. The integrated bracelet is constructed from stainless steel and is signed by the manufacturer Gay Frères. The design maintains a size profile reminiscent of the original Royal Oak reference 5402.

Evidence for this section
  • “39 mm steel case”
  • “Dark Blue Petit Tapisserie Dial”
  • “It has nicely shaped and robust screw down pushers with the same shape as a typical setting crown of the Royal Oak family”
  • “Integrated bracelet Gay Frères signed”

Movement and Functionality

The movement is the self-winding caliber 2385, a chronograph mechanism developed by Audemars Piguet in the 1990s. The caliber incorporates a date complication, which is integrated into the dial layout between the 4 and 5 o'clock positions. The chronograph functions are operated via the screw-down pushers on the side of the case.

The watch has been subjected to a regulation and check process by the vendor's watchmaker.

Evidence for this section
  • “took it to the next level by starting to develop its own self-winding chronograph caliber in the 1990s, the caliber 2385”
  • “Audemars Piguet decided to go with an additional date function, sitting in a window between 4 and 5 o’clock”
  • “Fully checked and regulated by our watchmaker”

Documentation and Provenance

This timepiece is provided with an 'Extrait de Registre' issued by Audemars Piguet, which serves as official documentation for the watch. This document specifies the reference 25860ST.00.1110ST.01, the movement caliber, and confirms a register date of 15.04.1999. The case number on the document corresponds to the series noted in the specifications.

The watch includes an Audemars Piguet branded cardboard service box. The association with Garry Kasparov is noted due to his historical role as a brand ambassador, and the model is frequently referred to as the 'Kasparov' in horological discourse.

Evidence for this section
  • “The watch comes with an AP cardboard ( service ) box and an ‘Extrait de Registre’ stating sale in 1999”
  • “This chronograph was dubbed “Garry Kasparov”, the chess player was an AP ambassador”

Open research questions

  • What is the specific production window for this serial number sequence?
  • Are there variations in the 'Petit Tapisserie' dial execution across the 25860 production run?

Source evidence

Recorded claims and source quotations for Audemars Piguet Royal Oak Chronograph 25860ST
FieldSource-reported valueSource quotation
MakerAudemars Piguet“Audemars Piguet Royal Oak Chronograph”
Reference25860ST“Reference 25860ST”
Case diameter39 mm“39 mm steel case”
Movement caliber2385“caliber 2385”
Bracelet makerGay Frères“Integrated bracelet Gay Frères signed”
Dial patternPetit Tapisserie“Dark Blue Petit Tapisserie Dial”
Date window position4 and 5 o'clock“sitting in a window between 4 and 5 o’clock”

Visible details

  • Dark blue dial with 'Petit Tapisserie' pattern
  • Integrated stainless steel bracelet with visible links
  • Screw-down chronograph pushers and crown
  • Engraved caseback with 'Royal Oak' text

Research qualifications

  • The exact serial number is partially obscured in the provided source text as 'no3xx/E-143xxx'
  • The claim of the watch being a 'future classic' is an opinion not based on objective historical evidence

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

ساعت مچی کرنوگراف Audemars Piguet Royal Oak رفرنس 25860ST ملقب به کاسپاروف

Reviewed 2026-11-02 · Record 3c0048f785

Terms in this record

Glossary explanations for terms named in this object’s record.

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