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The Encyclopedia of Horology

Clock · Dashboard stopwatch timer

Heuer 'Monte-Carlo' twin dial stopwatch timer

Partially verified

Reported by the auction source as dating to the 1970s, this Heuer 'Monte-Carlo' twin dial stopwatch timer comprises two mechanical timers mounted side by side on a shared rectangular chrome-finish plate with drilled mounting holes. Bonhams states that both units house jewelled manual-wind movements operated by a top winding crown for start and stop functions, complemented by push-button reset. Each black dial is signed 'MONTE-CARLO' with the Heuer shield emblem, featuring digital jumping hours with a lock feature at 6 o'clock, a large central hand registering 60 minutes, and a smaller concentric hand indicating seconds.

Front view of Heuer Monte-Carlo twin-dial timer mounted on chrome plate
Front view of Heuer Monte-Carlo twin-dial timer mounted on chrome plate — Bonhams. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
cars.bonhams.com
Category
Clock · Dashboard stopwatch timer
Maker / attribution
Heuer
Reference
Not recorded
Catalogue / lot identifier
4
Source-reported date
1970s
Country
Switzerland

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

Physical Configuration

This Heuer 'Monte-Carlo' assembly features two mechanical stopwatch units mounted side-by-side on a shared rectangular chrome-finish plate, which includes four integrated mounting holes for dashboard application.

Each timer is operated by a central knurled winding crown at the 12 o'clock position for start and stop functions, while a separate push-button, located on the upper corner of each unit, controls the reset function.

Evidence for this section
  • “mounted on a chrome finish back plate with four mounting screws”
  • “start/stop winding crown, with return to zero by push button”

Dial and Timekeeping Displays

The black dials are signed 'Monte-Carlo' and display time via a large central hand indicating 60 minutes and a smaller concentric hand dedicated to seconds.

Each unit features a digital jumping hour aperture at the 6 o'clock position, described as having a lock feature.

Evidence for this section
  • “black dials signed Monte-Carlo”
  • “digital jumping hours with lock feature”
  • “the large hand shows 60 minute, the small hand the seconds”

Documentation and Source Information

The source describes the timers as having jewelled manual-wind movements. The item is identified as a 1970s Heuer 'Monte-Carlo' assembly.

Specific internal movement calibres and serial numbers are not recorded in the provided source material.

Evidence for this section
  • “jewelled manual wind movements”
  • “A fine Heuer chrome cased twin dial stopwatch timer 'Monte-Carlo' 1970s”

Open research questions

  • What are the specific movement calibre numbers associated with the Monte-Carlo dashboard series?
  • Is the 'lock feature' for the digital jumping hours a standard mechanical component for this model?
  • Are there identifiable hallmarks or markings on the reverse of the mounting plate not captured in the auction photography?

Source evidence

Recorded claims and source quotations for Heuer 'Monte-Carlo' twin dial stopwatch timer
FieldSource-reported valueSource quotation
MakerHeuer“A fine Heuer chrome cased twin dial stopwatch timer 'Monte-Carlo' 1970s”
ModelMonte-Carlo“black dials signed Monte-Carlo”
Movement typeJewelled manual wind“jewelled manual wind movements”
Hour displayDigital jumping hours with lock feature“digital jumping hours with lock feature”
Hand indicationsLarge hand indicates 60 minutes, small hand registers seconds“the large hand shows 60 minute, the small hand the seconds”
Mounting plateChrome-finish backplate with four mounting screws“mounted on a chrome finish back plate with four mounting screws”
MountingChrome-finish backplate with four mounting screws“mounted on a chrome finish back plate with four mounting screws”

Visible details

  • Digital hour apertures at 6 o'clock display numerals '6' on the left timer and '3' on the right timer.
  • Dials are marked 'PATENT' and 'T < 25 mc' above the hour aperture, and 'MADE IN SWITZERLAND' along the lower edge.
  • Each timer features a large knurled central crown at 12 o'clock flanked by angled pushers at the top corners.
  • Both black rotating bezels feature fluted outer rims and triangular indicator arrows at the top.

Research qualifications

  • Specific internal movement calibres and serial numbers are not recorded in the source.
  • The rear side of the mounting plate and case backs are not visible in the provided photograph.

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

Consulted source

Bonhams Cars : A fine Heuer chrome cased twin dial stopwatch timer 'Monte-Carlo' 1970s

Reviewed 2026-10-22 · Record fc8def22dc

Terms in this record

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