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The Encyclopedia of Horology

Wristwatch · Automatic wristwatch with date

Omega Constellation Automatic Chronometer

Partially verified

This Omega Constellation wristwatch, produced in 1969, features a cushion-shaped case crafted from 18K yellow gold. It is an automatic, chronometer-rated timepiece measuring 36 mm by 33.5 mm with a thickness of 9 mm. The watch utilizes the caliber 1001 movement, a copper-colored mechanism with 20 jewels, a straight-line lever escapement, and a monometallic balance adjusted for five positions and temperature. The dial is gold-toned, equipped with applied yellow gold and black baton indexes, center seconds, and a date aperture. The watch is presented with a two-body case that is brushed and polished, featuring straight lugs, a flat bezel, and a screwed-down case back embossed with the Constellation logo. The hands are black and yellow gold baton style. The dial, case, and movement are signed by the maker.

Front view of the 18K yellow gold Omega Constellation automatic watch.
Front view of the 18K yellow gold Omega Constellation automatic watch. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Automatic wristwatch with date
Maker / attribution
Omega
Reference
166.056/168.042
Catalogue / lot identifier
11
Source-reported date
1969
Source-reported place
Switzerland
Source-reported serial
29044830

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

The watch is housed in a cushion-shaped, two-body case constructed from 18K yellow gold. The exterior surfaces are brushed and polished, complemented by a flat bezel and straight lugs. A screwed-down case back is present, featuring the embossed Constellation logo.

The dial is gold in color, finished with applied yellow gold and black baton indexes and an outer minute division. An aperture for the date is integrated into the design. Time is displayed via black and yellow gold baton hands, with an applied gold Omega logo positioned at the top of the dial. The dial is signed.

Evidence for this section
  • “cushion-shaped, water-resistant, self-winding, center seconds, 18K yellow gold wristwatch with date”
  • “Two-body, solid, brushed and polished, straight lugs, flat bezel, screwed down case back with embossed Constellation logo”
  • “Gold with applied yellow gold and black baton indexes, outer minute division, applied gold Omega logo, aperture for the date.”

Movement and Escapement

The watch operates on the Omega caliber 1001 movement. This is a self-winding, copper-colored mechanism containing 20 jewels. The technical specification includes a straight-line lever escapement, a shock absorber, and a self-compensating flat balance spring.

The movement is further equipped with a monometallic balance that is adjusted to five positions and temperature. An index regulator is included within the assembly. The movement is officially certified as a chronometer and is signed by the manufacturer.

Evidence for this section
  • “Cal. 1001, copper colored, 20 jewels, straight line lever escapement, monometallic balance adjusted to five positions and temperature, shock absorber, self-compensating flat balance spring, index regulator.”
  • “Constellation, Automatic, Chronometer, Officially Certified”

Condition and Attribution

The watch is described as fine and in 'Grade A' overall condition. According to the auction description, the specific components are graded as follows: the case is ranked as 3, the movement as 3*, and the dial as 3-01.

The hands are noted as original to the watch. Signatures are present on the dial, the case, and the movement.

Evidence for this section
  • “Grading System Grade: A Good Case: 3 Good Movement: 3* Good Overhaul recommended, at buyer's expense Dial: 3-01 Good HANDS Original”
  • “Dial, case and movement signed.”

Open research questions

  • What is the specific significance of the movement grade 3* in the provided grading system?
  • Are there known variations of this reference with different dial colors from 1969?

Source evidence

Recorded claims and source quotations for Omega Constellation Automatic Chronometer
FieldSource-reported valueSource quotation
Reference166.056/168.042“Ref. 166.056/168.042”
Date of manufacture1969“Made in 1969”
Case material18K yellow gold“18K yellow gold”
MovementCaliber 1001“Cal. 1001”
Movement number29044830“movement No. 29044830”
Dimensions36 x 33.5 mm“Dim. 36 x 33.5 mm”
ConditionGrade A“Grade: A Good”

Visible details

  • Case features a brushed and polished finish
  • Dial includes a date aperture at the 3 o'clock position
  • Case back includes an embossed Constellation logo
  • Black and gold baton style hands

Research qualifications

  • The auction description recommends an overhaul for the movement
  • Movement condition is listed as 3* Good

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

Consulted source

Omega, "Constellation, Automatic, Chronometer, Officially Certified", movement No. 29044830, Ref. 166.056/168.042. Made in 1969. Fine, cushion-shaped, water-resistant, self-winding, center seconds, 18K yellow gold wristwatch with date. To be sold without reserve

Reviewed 2026-10-26 · Record 7acac0e1d4

Terms in this record

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

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