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The Encyclopedia of Horology

Pocket watch · Three-quarter plate pocket watch

Omega 9k Gold Pocket Watch

Partially verified

This pocket watch, dated to 1939, features a Swiss-made Omega movement housed within a 9k solid gold case manufactured by the Dennison Watch Case Company. The overall diameter measures 46.6mm, excluding the crown and bow, with a movement size of 39.8mm corresponding to a US size 12. The movement is a three-quarter plate configuration with 15 jewels and a lever escapement. The watch is wound and set via the crown. The white dial displays Roman numerals and a subsidiary seconds dial at the six o'clock position. The auction description notes that the crystal is a replacement mineral glass. The case carries Birmingham hallmarks for the year 1939, indicating that the gold case was assayed and hallmarked in the United Kingdom despite the watch's Swiss origin. The timepiece is reported as being in working condition with a specified daily accuracy of approximately +/- 5 minutes.

Front view of the Omega pocket watch showing the Roman numeral dial, subsidiary seconds, and 9k gold case.
Front view of the Omega pocket watch showing the Roman numeral dial, subsidiary seconds, and 9k gold case. — Watch Museum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
watchmuseum.org
Category
Pocket watch · Three-quarter plate pocket watch
Maker / attribution
Omega
Reference
Not recorded
Catalogue / lot identifier
483
Source-reported date
1939
Source-reported place
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

Case and Dial Construction

The timepiece is housed in a 9k solid gold case produced by the Dennison Watch Case Company. The case features Birmingham hallmarks, which indicate it was assayed in 1939. This specific case style is designed with a crown wind and crown set mechanism.

The dial is finished in white and features black painted Roman numerals to indicate the hours. A subsidiary seconds dial is positioned at the six o'clock mark. The crystal has been replaced with a mineral glass variant.

Evidence for this section
  • “Dennison 9k solid Gold case. 0.375. Hallmarked for Birmingham 1939”
  • “Replacement Mineral glass Crystal”
  • “DIAL: Roman numerals.”

Movement and Performance

The movement is identified as a Swiss-made three-quarter plate configuration. It contains 15 jewels and operates with a lever escapement. The movement size is 39.8mm, which is equivalent to a US size 12.

According to the auction description, the movement was stripped and cleaned within the last 12 months. It provides a run time of approximately 24 hours on a full wind, with a reported accuracy of plus or minus five minutes per day.

Evidence for this section
  • “MOVEMENT TYPE: Three quarter plate.”
  • “JEWELS: 15”
  • “ESCAPEMENT: Lever”
  • “MOVEMENT ACCURACY: +/- 5 minutes in 24 hours”

Condition Reporting

The auction description reports that the watch is in working condition. It describes the overall state as near perfect, while the movement is described as being in good condition.

The dial is noted to be in good condition, although it features very small marks near the center. The seller notes that there may be other faults of which they are unaware, and cautions that old mechanical watches may contain worn components.

Evidence for this section
  • “OVERALL CONDITION: The watch is working well and in near perfect condition.”
  • “DIAL: Roman numerals. Good condition, but with some very small marks near the centre.”
  • “There may be other faults of which I am not aware.”

Open research questions

  • Does the serial number on the movement confirm a 1939 production date in Switzerland?
  • Was the movement cased by Dennison in the UK upon import, or was the completed watch imported?

Source evidence

Recorded claims and source quotations for Omega 9k Gold Pocket Watch
FieldSource-reported valueSource quotation
Date of manufacture1939“YEAR OF MANUFACTURE: 1939”
Case material9k solid gold“Dennison 9k solid Gold case”
Case originDennison (Birmingham hallmark)“Hallmarked for Birmingham 1939”
Overall size46.6mm excluding bow and crown“SIZE OVERALL: 46.6mm (excluding bow and crown)”
Movement size39.8mm (US size 12)“SIZE MOVEMENT: 39.8mm. US size 12.”
Jewel count15“JEWELS: 15”

Visible details

  • Roman numeral hour markers
  • Subsidiary seconds dial at the six o'clock position
  • Blue-tinted metallic hands
  • Crown-positioned at the 12 o'clock location

Research qualifications

  • The auction description states there may be other faults of which the seller is not aware.
  • The crystal is a replacement component.
  • Reported accuracy is +/- 5 minutes per 24 hours.

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

Consulted source

Omega. 9k Gold Case. 1939

Reviewed 2026-11-02 · Record b4df6d981d

Terms in this record

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