Omega Observatory Tourbillon Wrist Chronometer
Record status
Individual type · partial
Period
1947
Maker / issuer
OmegaThis Omega wrist chronometer, numbered 10595936, is built with a Caliber 30 I movement, which was one of 12 produced in 1947 for Geneva Observatory trials. The movement participated in the 1948 and 1952 observatory competitions, achieving scores of 806 and 735 points respectively.
It is one of seven examples that were cased and sold commercially in 1987. The watch features a sterling silver, three-body polished case with a transparent back, lapidated bezel, and concave lugs. Hand-setting is controlled via a push-button located on the band at the 4 o'clock position. The matte silver dial displays black painted Dauphine numerals with outer minute divisions and a subsidiary seconds indicator, complemented by blued steel baton hands.
Internally, the 2/3 plate movement includes 25 jewels, a 7.5-minute tourbillon regulator, and a Guillaume balance with a Breguet overcoil, beating at 18,000 vibrations per hour.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Type
- Tourbillon wrist chronometer
- Caliber
- 30 I
- Diameter
- 36 mm
- Escapement
- 7.5 minute tourbillon
- Balance type
- Guillaume balance
- Case material
- Sterling silver
- Place recorded
- Switzerland
- Movement number
- 10595936
- Maker / attribution
- Omega
- Production quantity
- One of seven cased and sold in 1987
Design
- Case and Dial
- The watch is housed in a solid, three-body sterling silver case featuring a polished finish. The design incorporates a lapidated bezel and concave lugs. A notable functional feature is the inclusion of a push-button positioned on the case band at 4 o'clock, which facilitates the setting of the hands. The dial is finished in a matte silver tone and is styled with painted black Dauphine numerals. It includes a dedicated subsidiary seconds dial and outer minute track markers. The time is indicated by blued steel baton-style hands,
- Visible features
- • Transparent case back revealing the movement • Push-button hand-setting mechanism at 4 o'clock • Matte silver dial with painted Dauphine numerals • Blued steel baton hands
- Provenance and Trials
- This movement is identified as the 4th of 12 examples manufactured by Omega's Geneva factory in 1947. These movements were specifically intended for testing in the Geneva Observatory trials. The records indicate this movement was submitted twice, scoring 806 points in 1948 and 735 points in 1952. Although produced for trials, the movement remained uncased for several decades. It was eventually integrated into one of seven completed watches offered for commercial sale in 1987.
- Movement and Regulator
- The internal mechanism is the Omega Caliber 30 I, a 2/3 plate movement constructed in 1947. It is equipped with 25 jewels and features a 7.5-minute tourbillon regulator. The two-part rhodium-plated brass cage is secured by three case screws. The movement utilizes a Guillaume balance and a Breguet overcoil, operating at a frequency of 18,000 vibrations per hour. An index regulator is positioned on one of the cage arms to allow for adjustments to the timing performance.
Identification
- Serial number
- 10595936
- Source note
- Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.
Catalogue references
No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.
Research required
- Research required: The source attributes the movement construction to 1947, but the commercial sale occurred later in 1987
- Research required: Specific attribution of the 1987 casing process details remains limited