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The Encyclopedia of Horology

Wristwatch · Perpetual calendar wristwatch

Roger Dubuis Quantième Perpétuel Bulletin d'Observatoire

Partially verified

This Roger Dubuis Quantième Perpétuel, reference H37 5739, is a self-winding perpetual calendar wristwatch in 18K white gold. Manufactured circa 2000, the timepiece features a white dial with applied white gold Breguet numerals and dart indexes. It provides functions for a perpetual calendar including moon phases, leap year indication, and a subsidiary dial for the day of the month. The movement, caliber RD 5739, is rhodium-plated and decorated with fausses cotes, bearing the Seal of Geneva quality mark. It includes 30 jewels, a straight-line lever escapement, and a swan neck regulator, and is adjusted to five positions. The watch is housed in a two-body, water-resistant white gold case with a transparent screwed-down case back, measuring 40 mm in diameter and 11 mm in thickness. It is fitted with an 18K white gold Roger Dubuis buckle.

Front view of the Roger Dubuis Quantième Perpétuel reference H37 5739 showing the dial, hands, and perpetual calendar indicators.
Front view of the Roger Dubuis Quantième Perpétuel reference H37 5739 showing the dial, hands, and perpetual calendar indicators. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Perpetual calendar wristwatch
Maker / attribution
Roger Dubuis
Reference
H37 5739
Catalogue / lot identifier
332
Source-reported date
circa 2000
Source-reported place
Switzerland
Source-reported serial
27

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 watch features a two-body, 18K white gold case designed for water resistance. It is finished with polished and brushed surfaces and includes a concave bezel and lugs. The back of the case is transparent and screwed down, allowing visual access to the movement.

The white dial is adorned with applied white gold radial Breguet numerals and dart indexes. The outer periphery displays dot minute divisions and a 1/5th seconds track. Time is indicated by white gold feuille hands. The calendar information is presented via subsidiary dials and apertures for the days, months, moon phases, and leap year.

Evidence for this section
  • “Two-body, solid, polished and brushed, transparent screwed-down case back, concave bezel and lugs”
  • “White with applied white gold radial Breguet numerals and dart indexes”
  • “apertures for the days of the week, the months, the moon phases and the leap year indication”

Movement and Caliber

Power is provided by the self-winding Caliber RD 5739, which is rhodium-plated and finished with fausses cotes decoration. The movement contains 30 jewels and utilizes a straight-line lever escapement. It is equipped with a swan neck regulator, a shock absorber, and a self-compensating flat balance spring.

The watch features a central rotor finished with a pink gold 'RD' monogram and includes a hack mechanism. The movement has been adjusted to five positions and bears the Seal of Geneva quality mark.

Evidence for this section
  • “Cal. RD 5739, stamped with the Seal of Geneva quality mark, rhodium-plated, fausses cotes decoration”
  • “30 jewels, straight-line lever escapement, monometallic balance adjusted to 5 positions”

Condition and Attribution

The auction description provides a grading system where the watch is evaluated as a whole and by component. The case is reported as being in very good condition with slight scratches. The dial is classified as 'as new', and the hands are noted as original.

The dial, case, and movement are documented as signed by the maker.

Evidence for this section
  • “Grading System Grade: AA Very good”
  • “Case: 2-8 Very good Slightly scratched”
  • “Movement: 2* Very good Overhaul recommended, at buyer's expense”
  • “Dial, case and movement signed.”

Open research questions

  • What is the specific significance of the 'Bulletin d'Observatoire' designation for this movement?
  • How many examples of the Ref. H37 5739 were produced during this era?

Source evidence

Recorded claims and source quotations for Roger Dubuis Quantième Perpétuel Bulletin d'Observatoire
FieldSource-reported valueSource quotation
MakerRoger Dubuis“Roger Dubuis, Horloger Genevois”
Reference NumberH37 5739“Ref. H37 5739”
Movement Number27“movement No. 27”
Case Material18K white gold“18K white gold wristwatch”
Movement CaliberRD 5739“Cal. RD 5739”
CertificationSeal of Geneva“stamped with the Seal of Geneva quality mark”
Dimensions40 mm diameter, 11 mm thickness“DIAM. 40 mm. THICKNESS 11 mm.”

Visible details

  • Applied white gold radial Breguet numerals on the dial
  • Transparent case back revealing the mechanical movement
  • Correction push-piece visible on the side of the case band
  • Moon phase aperture located in the lower left quadrant

Research qualifications

  • The auction house recommends an overhaul for the movement
  • The case shows slight scratches according to the condition report

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

Consulted source

ROGER DUBUIS PERPETUAL CALENDAR WHITE GOLD Roger Dubuis, Horloger Genevois, "Quantième Perpétuel - Bulletin d'Observatoire," movement No. 27, Ref. H37 5739. Made in circa 2000. Very fine and rare, center-seconds, water resistant, self-winding, 18K white gold wristwatch with perpetual calendar, moon phases, leap year indication and an 18K white gold Roger Dubuis buckle.

Reviewed 2026-10-26 · Record 20295980b8

Terms in this record

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

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