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The Encyclopedia of Horology

Pocket watch · Clock watch

Breguet Gold Case Clock Watch No. 300

Partially verified

According to the Science Museum Group, this gold-cased clock watch was made by Bréguet in France between 1790 and 1810 and is numbered 300. The museum records that the watch incorporates a cylinder escapement featuring a ruby cylinder overhanging below the bottom pivot, accompanied by a certificate. Visual inspection shows a white enamel dial with Arabic Breguet numerals, dotted minute markers, blued steel open-tipped hands, and a cursive 'Breguet' signature. A distinct sunken circular aperture appears at the lower right quadrant, and the yellow gold case band displays detailed geometric patterning.

Oblique front view showing the enamel dial, hands, gold case band, and pendant bow
Oblique front view showing the enamel dial, hands, gold case band, and pendant bow — The Board of Trustees of the Science Museum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
collection.sciencemuseumgroup.org.uk
Category
Pocket watch · Clock watch
Maker / attribution
Bréguet
Reference
Not recorded
Catalogue / lot identifier
co331
Source-reported date
1790-1810
Country
France
Source-reported serial
300

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

Dial Configuration

The timepiece features a white enamel dial with Arabic numerals and dotted minute indices. It is equipped with blued steel open-tipped hands for displaying the time.

A cursive 'Breguet' signature is present on the dial, positioned between the 5 and 6 o'clock markers. A sunken circular aperture is visible in the lower right quadrant.

Evidence for this section
  • “White enamel dial with Arabic Breguet numerals and dotted minute indices.”
  • “Cursive 'Breguet' signature positioned between 5 and 6 o'clock.”
  • “A textured, sunken circular aperture situated in the lower right quadrant near 4 o'clock.”

Case Construction

The watch is encased in yellow gold, featuring a patterned, textured outer case band. The assembly includes a top pendant bow.

The reverse of the case is not visible in the provided source material, and no record of hallmarks is noted in the provided text.

Evidence for this section
  • “Yellow gold case featuring a patterned, textured outer case band and a distinctive top pendant bow.”

Movement and Escapement

According to the Science Museum Group, the watch is a clock watch containing a cylinder escapement. The escapement is noted to feature a ruby cylinder that overhangs the bottom pivot.

The internal mechanism is not visible in the provided imagery.

Evidence for this section
  • “Clock watch, cylinder escapement, in gold case by Breguet no.300, ruby cylinder, over-hanging below bottom pivot”

Open research questions

  • What is the specific function of the sunken circular aperture located at the lower right quadrant of the dial?
  • What information is contained in the certificate associated with this watch?

Source evidence

Recorded claims and source quotations for Breguet Gold Case Clock Watch No. 300
FieldSource-reported valueSource quotation
MakerBréguet“maker: Bréguet”
Date of Manufacture1790-1810“Made: 1790-1810”
Country of OriginFrance“in France”
DescriptionClock watch, cylinder escapement, in gold case by Breguet no.300“Clock watch, cylinder escapement, in gold case by Breguet no.300, ruby cylinder, over-hanging below bottom pivot, with certificate, 1790-1810”
Associated DocumentationCertificate“with certificate”

Visible details

  • White enamel dial with Arabic Breguet numerals and dotted minute indices.
  • Cursive 'Breguet' signature positioned between 5 and 6 o'clock.
  • Blued steel Breguet-style open-tipped hands for hours and minutes.
  • A textured, sunken circular aperture situated in the lower right quadrant near 4 o'clock.
  • Yellow gold case featuring a patterned, textured outer case band and a distinctive top pendant bow.

Research qualifications

  • Internal mechanism, movement details, and escapement structure are not visible and rely entirely on museum reporting.
  • The reverse of the case and any accompanied certificate mentioned by the source are not shown.

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

Consulted source

Pocket Watch in Gold Case by Breguet, 1790-1810 | Science Museum Group Collection

Reviewed 2026-10-22 · Record 87d184dd84

Terms in this record

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

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