Skip to content
The Encyclopedia of Horology

Wristwatch · Automatic chronometer wristwatch with day and date

Omega Constellation Co-Axial Chronometer Ref. SI14

Partially verified

This Omega Constellation wristwatch, produced circa 2010, features a two-body case constructed from a combination of stainless steel and 18K yellow gold. It is fitted with an integrated stainless steel and 18K yellow gold link bracelet, which terminates in a double deployant clasp. The watch is powered by the self-winding Caliber 8602 movement, which incorporates a co-axial escapement, a free-sprung self-compensating balance spring, and a monometallic balance with timing screws. The watch dial is satine silver with applied 18K yellow gold baton indexes, luminous squares, and luminous yellow gold dauphine hands. Notable functions include a center seconds hand, a date aperture located at 6 o'clock, and a day-of-the-week aperture at 12 o'clock. The exterior is defined by a graduated bezel featuring engraved radial Roman numerals and characteristic side 'claws', paired with a screw-down transparent case back and sapphire crystals.

Front view of the Omega Constellation Co-Axial Chronometer with day and date display.
Front view of the Omega Constellation Co-Axial Chronometer with day and date display. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Automatic chronometer wristwatch with day and date
Maker / attribution
Omega
Reference
SI14
Catalogue / lot identifier
210
Source-reported date
circa 2010
Source-reported place
Not established
Source-reported serial
85944312

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 Design

The wristwatch is housed in a two-body case made from a mix of stainless steel and 18K yellow gold, featuring a combination of polished and brushed surfaces. The design includes a graduated bezel engraved with radial Roman numerals and the distinctive 'claws' on each side of the case. The case measures 40 mm in diameter and 14 mm in thickness, with a total length of approximately 195 mm. It is finished with sapphire crystals and a screw-down transparent case back to view the movement.

The dial is finished in a satine silver tone, featuring applied yellow gold baton indexes and luminous square markers for visibility. Time is indicated by luminous yellow gold dauphine hands. The dial layout includes two specific calendar apertures: a day-of-the-week display positioned at the 12 o'clock index and a date display positioned at the 6 o'clock index.

Evidence for this section
  • “Two-body, polished and brushed, graduated bezel with engraved radial Roman numerals and "claws" to each side, screw-down transparent case back, sapphire crystals.”
  • “Satine silver with applied yellow gold baton indexes and luminous squares, apertures for the date at 6 and day of the week at 12.”

Movement and Escapement

The timepiece is powered by the Omega Caliber 8602, a self-winding, automatic movement. The movement is rhodium-plated and features fausses côtes decoration. It is designed as a chronometer, incorporating a co-axial escapement intended for precision timekeeping.

The technical assembly of the caliber includes a monometallic balance equipped with timing screws for calibration. It further utilizes a shock absorber system and a free-sprung self-compensating flat balance spring to manage oscillations.

Evidence for this section
  • “Cal. 8602, rhodium-plated, fausses côtes decoration, co-axial escapement, monometallic balance with timing screws, shock absorber, free-sprung self-compensating flat balance spring.”
  • “Overhaul recommended, at buyer's expense”

Signatures and Grading

All primary components of the watch—the dial, the case, and the movement—are signed by Omega. The case bears the serial number 85944312. The watch is classified as a chronometer and is noted for its center seconds function and water resistance rating of 100 meters.

The auction house has assigned a grading system to the lot. The case is graded as '1' (as new), and the dial as '1-01' (as new). The movement is graded as '1*' (as new). The watch is accompanied by an integrated Omega link bracelet in stainless steel and 18K yellow gold, which features a double deployant clasp.

Evidence for this section
  • “Dial, case and movement signed.”
  • “Grading System Grade: AA Very good Case: 1 As new Movement: 1* As new”

Open research questions

  • What is the specific year of production within the 'circa 2010' estimate?
  • Was this reference produced in limited quantities?

Source evidence

Recorded claims and source quotations for Omega Constellation Co-Axial Chronometer Ref. SI14
FieldSource-reported valueSource quotation
Case Number85944312“case No. 85944312”
MovementCaliber 8602“Cal. 8602, rhodium-plated, fausses côtes decoration, co-axial escapement”
Water Resistance100 meters“water resistant to 100 m”
Case ConstructionTwo-body steel and 18K gold“Two-body, polished and brushed, graduated bezel with engraved radial Roman numerals and "claws" to each side”
Dial FeaturesApplied gold indexes and luminous squares“Satine silver with applied yellow gold baton indexes and luminous squares”
BraceletSteel and 18K gold link“stainless steel and 18K yellow gold Omega link bracelet with double deployant clasp”

Visible details

  • Graduated bezel features radial Roman numerals and side claws
  • Satine silver dial includes day and date apertures
  • Integrated bracelet utilizes a mix of gold and steel links

Research qualifications

  • Movement overhaul is recommended at the buyer's expense
  • The specific country of manufacture is not stated in the source

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

Consulted source

OMEGA REF. SI14 CO-AXIAL CHRONOMETER GOLD AND STEEL Omega, Co-Axial Escapement, Chronometer, Automatic," case No. 85944312. Made circa 2010. Very fine, center seconds, self-winding, water resistant to 100 m, stainless steel and 18K yellow gold Chronometer wristwatch with date and day and a stainless steel and 18K yellow gold Omega link bracelet with double deployant clasp.

Reviewed 2026-10-26 · Record e03c559767

Terms in this record

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