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The Encyclopedia of Horology

Wristwatch · Régulateur wristwatch

Vacheron Constantin Malte Dual Time Régulateur Ref. 42005

Partially verified

This gentleman's chronometer wristwatch, identified as the Malte Dual Time Régulateur, Ref. 42005, was produced by Vacheron & Constantin and sold in April 2002. The watch is constructed from 18K white gold and features a three-body, solid, polished case with a transparent case back secured by six screws, protected by a hinged 18K white gold cover. The movement is a self-winding Caliber 1206 with 31 jewels, rhodium plating, and a gold rotor. The watch offers 65-hour power autonomy and is water-resistant. Its dial displays a regulator layout with separate indicators for minutes, a subsidiary 12-hour register, and a 24-hour dual time zone display, complemented by a date function. It is presented on an 18K white gold Vacheron Constantin buckle and is accompanied by a certificate.

Front view showing the regulator dial, pusher at the top left, and subsidiary registers for dual time and date.
Front view showing the regulator dial, pusher at the top left, and subsidiary registers for dual time and date. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Régulateur wristwatch
Maker / attribution
Vacheron & Constantin, Genève
Reference
42005
Catalogue / lot identifier
84
Source-reported date
circa 2002
Source-reported place
Switzerland
Source-reported serial
915846

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 Architecture

The watch features an 18K white gold three-body case with a polished finish, fluted lugs, and a flat bezel. It is designed with a transparent case back secured by six screws, which is further protected by a hinged cover composed of the same 18K white gold material and containing an internal mirror. A pusher is integrated into the case band to facilitate adjustment of the second 24-hour time zone.

The two-tone matte silver dial employs a regulator-style layout. The primary minute indication uses painted Arabic numerals. Subsidiary displays include an hour dial with Roman numerals and indexes, a 24-hour dual time zone display with a guilloché center, and a combined seconds and date register. White gold hands in épée and lozenge styles indicate the time functions.

Evidence for this section
  • “Three-body, solid, polished, transparent case back with six screws covered by a hinged 18K white gold cover with a mirror inside”
  • “pusher on the band to activate the second 24-hour time zone”
  • “Two-tone matte silver with painted Arabic numerals for the minute indications”
  • “White gold "épée" and "lozenge" hands.”

Movement and Mechanical Specifications

The timepiece is powered by the self-winding Caliber 1206 movement. It is constructed with 31 jewels, an 18K gold rotor, and rhodium plating. Mechanical features include a straight-line lever escapement, a monometallic balance, a shock absorber system, and a self-compensating flat balance spring. The movement provides an autonomy of approximately 65 hours.

The movement is finished with fausses côtes decoration. Signatures confirming the authenticity of the dial, case, and movement are present according to the documented information.

Evidence for this section
  • “Cal. 1206, rhodium-plated, "fausses côtes" decoration, 31 jewels, straight-line lever escapement”
  • “18K gold rotor”
  • “65-hour autonomy”
  • “Dial, case and movement signed.”

Condition and Accompaniments

The auction description provides a grading for the watch, which is classified as very good in its overall condition. Specifically, the case is marked as grade 2, while the movement is rated as grade 1, described as new. The dial is also documented in an as-new state.

The wristwatch is sold with an 18K white gold Vacheron Constantin buckle. The lot includes an official certificate to accompany the piece.

Evidence for this section
  • “Grading System Grade: AA Very good”
  • “Case: 2 Very good”
  • “Movement: 1 As new”
  • “Accompanied by a certificate.”

Open research questions

  • What is the specific production date range for the Ref. 42005?
  • Are there variations in the hinge mechanism for the 18K white gold case back cover?

Source evidence

Recorded claims and source quotations for Vacheron Constantin Malte Dual Time Régulateur Ref. 42005
FieldSource-reported valueSource quotation
MakerVacheron & Constantin, Genève“Vacheron & Constantin, Genève”
Reference42005“Ref. 42005”
Movement caliberCal. 1206“M. Cal. 1206”
Case number729269“case No. 729269”
Movement number915846“No. 915846”
Material18K white gold“18K white gold gentleman's chronometer wristwatch”
Sale dateApril 2002“Sold on April 2002.”
Movement decorationRhodium-plated, fausses côtes“rhodium-plated, "fausses côtes" decoration”

Visible details

  • Hinged case back with internal mirror
  • Pusher on the case band for second time zone
  • Fluted lugs and flat bezel
  • Sub-dials for date/seconds and 24-hour dual time

Research qualifications

  • Condition grading is attributed to the auction house
  • Exact manufacturing date is not specified, only sale date of April 2002

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

Consulted source

Ref. 42005 'White Gold' Vacheron & Constantin, Genève, "Malte Dual Time Régulateur", No. 915846, case No. 729269, Ref. 42005. Sold on April 2002. Very fine, two time zone, self-winding, water-resistant, 18K white gold gentleman's chronometer wristwatch with regulator dial, 24-hour indication, date, 65-hour autonomy and an 18K white gold Vacheron Constantin buckle. Accompanied by a certificate.

Reviewed 2026-10-26 · Record bd502310ce

Terms in this record

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