Skip to content
The Encyclopedia of Horology

Wristwatch · Square case self-winding watch

Roger Dubuis Golden Square wristwatch

Partially verified

This Roger Dubuis Golden Square wristwatch, identified as serial number 01/28 from a limited edition of 28 examples produced in 2004, features an 18K pink gold square-curved case measuring 40 mm by 40 mm. The watch is powered by the self-winding Calibre RD57 movement, which includes a swan-neck micrometer regulator and a straight-line lever escapement. The movement is finished with rhodium plating and fausses cotes decoration, further characterized by 25 jewels and the Seal of Geneva quality mark. The dial, constructed of black carbon fiber, is detailed with painted radial Roman numerals and an inner minute track, paired with pink gold spade hands. The case construction includes polished and brushed surfaces, straight lugs with screw bars, and a transparent case back secured with screws. The watch is presented on a strap with an 18K pink gold Roger Dubuis buckle and is accompanied by a wooden box, certificate, and Bulletin de Marche.

Front view of the Roger Dubuis Golden Square wristwatch featuring a pink gold case and carbon fiber dial.
Front view of the Roger Dubuis Golden Square wristwatch featuring a pink gold case and carbon fiber dial. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Square case self-winding watch
Maker / attribution
Roger Dubuis
Reference
G40.56.5.K9.7G
Catalogue / lot identifier
68
Source-reported date
2004
Source-reported place
Switzerland
Source-reported serial
01/28

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 Construction

The timepiece features a two-body, square curved case crafted from 18K pink gold. Its surface finishes are a combination of polished and brushed areas, contributing to its aesthetic profile. The design incorporates straight lugs fitted with functional screw bars to secure the strap. A curved sapphire crystal protects the dial, while the reverse features a transparent case back held in place by screws, allowing for visibility of the internal mechanics.

The dial is fabricated from black carbon fiber, providing a distinct background for the large, painted radial Roman numerals that span the dial's interior. It also displays an inner minute track. The time is indicated by pink gold spade hands, consistent with the material of the case. The overall dimensions of the watch are 40 mm by 40 mm, with a case thickness of 10 mm.

Evidence for this section
  • “C. Two-body, solid, polished and brushed, massive, straight lugs with screws bars, curved sapphire crystal, transparent case back with screws.”
  • “D. Black carbon fiber with large painted radial Roman numerals, inner minute track. Pink gold spade hands.”
  • “Dim. 40 x 40 mm. Thickness: 10 mm.”

Movement and Technical Specifications

The movement is rhodium-plated and features fausses cotes decoration, a refined finish consistent with the Seal of Geneva quality mark stamped upon it. It operates with 25 jewels and utilizes a straight-line lever escapement.

Functional regulation is managed by a swan-neck micrometer regulator, and the balance is a monometallic type adjusted to five positions. A self-compensating flat balance spring is included in the assembly. The entire movement is signed, aligning with the branding on the dial and case.

Evidence for this section
  • “M. Cal. RD57, rhodium-plated, stamped with the Seal of Geneva quality mark, fausses cotes decoration, 25 jewels, straight-line lever escapement, monometallic balance adjusted to five positions, shock absorber, swan-neck micrometer regulator, self compensating flat balance spring.”
  • “Dial, case and movement signed.”

Condition and Accompanying Material

The auction description reports the watch is in very good overall condition, graded as AA. Specifically, the case is noted to have light scratches, while the dial is assessed as being in as-new condition, graded 1-01. The movement is likewise assessed as in as-new condition, graded 1. The hands are documented as original.

The object is sold with its original wooden box, a Certificate of Origin, and the Bulletin de Marche issued by the Observatoire National de Besançon. These items provide supporting documentation for the limited edition nature of the watch.

Evidence for this section
  • “Grading System Grade: AA Very good Case: 3-8 Good Slightly scratched Movement: 1 As new Dial: 1-01 As new HANDS Original”
  • “Accompanied by the original wooden box, Certificate of Origin and the Bulletin de Marche of the Observatoire National de Besançon.”

Open research questions

  • What is the specific significance of the Bulletin de Marche from the Observatoire National de Besançon for this limited edition reference?
  • How does the RD57 movement vary in technical configuration across different Golden Square references?

Source evidence

Recorded claims and source quotations for Roger Dubuis Golden Square wristwatch
FieldSource-reported valueSource quotation
MakerRoger Dubuis“Roger Dubuis, Horloger Genevois”
Limited EditionNumber 01/28“No. 01/28”
Reference NumberG40.56.5.K9.7G“Ref. G40.56.5.K9.7G”
Movement CalibreRD57“Cal. RD57”
Case Dimensions40 x 40 mm“Dim. 40 x 40 mm.”
CertificationBulletin de Marche of the Observatoire National de Besançon“Bulletin de Marche of the Observatoire National de Besançon”
Quality MarkSeal of Geneva“stamped with the Seal of Geneva quality mark”

Visible details

  • Carbon fiber textured dial surface
  • Large radial Roman numerals extending to the dial edges
  • Exposed screw bars on the lugs
  • Pink gold spade-style hour and minute hands

Research qualifications

  • The auction house reports the case has light surface scratches
  • The full scope of the original wooden box contents beyond the mentioned certificates remains unverified

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

Consulted source

Golden Square No. 1 Roger Dubuis, Horloger Genevois, "Golden Square,' No. 01/28, Ref. G40.56.5.K9.7G. Bulletin d'Observatoire. Made in a limited edition of 28 examples in 2004. Very fine, square curved, water-resistant, self-winding, 18K pink gold wristwatch with an 18K pink gold Roger Dubuis buckle. Accompanied by the original wooden box, Certificate of Origin and the Bulletin de Marche of the Observatoire National de Besançon.

Reviewed 2026-10-26 · Record 5ffacd0b2c

Terms in this record

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