Omega Constellation Constellation Co-Axial 31 Stainless Steel / Yellow Gold / MOP

Reference 123.20.31.20.05.002

About this watch

The Omega Constellation Co-Axial 31 is a masterpiece of luxury watchmaking, boasting an exquisite mother of pearl dial, high-quality materials, and chronometer certification for accuracy. This stunning timepiece combines classic elegance with modern technology, making it perfect for those who appreciate luxury and precision in their timepieces. With its comfortable size and fit, good water resistance, and rich history, the Constellation Co-Axial 31 is a standout choice in the crowded luxury watch market.
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Key Features

  • Stunning mother of pearl dial
  • Chronometer certification for accuracy
  • High-quality materials (stainless steel and yellow gold)
  • Comfortable size and fit
  • Good water resistance
  • Robust automatic movement (Omega caliber 8520)
  • 12-hour fixed bezel

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 31 Stainless Steel / Yellow Gold / MOP
Reference
123.20.31.20.05.002
Movement
8520
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
31mm
Dial Color
White
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Omega Constellation. Double Eagle. $1350 only !!

Omega Constellation. Double Eagle. $1350 only !!

A Omega Constellation Double Eagle, in good condition, suitable for everyday use.

  • Condition: Good daily wear
  • Lume quality: nice
  • Case size: 38/39mm
  • Shipping method: Fedex with insurance
Posted at
Mar 30, 2026, 6:30 PM
Active
[WTS] 1959 Omega Constellation ref. 14393 gold capped w/ Cal. 561 – crosshair dial – $1575 shipped

1959 Omega Constellation ref. 14393 gold capped w/ Cal. 561 – crosshair dial – $1575 shipped

Omega - 14393 · $1,575
1959 Omega Constellation ref. 14393 with chronometer-grade Cal. 561 automatic movement, clean original sunburst crosshair dial, and a very honest overall presentation.

  • Condition: Excellent with honest presentation
  • Movement: Cal. 561 automatic movement
  • Dial: Original sunburst crosshair dial
  • Service: Freshly serviced in March 2026
Posted at
Mar 30, 2026, 12:58 PM
Active
[WTS] Omega Constellation 1542.30

Omega Constellation 1542.30

Omega - 1542.30 · $1,300
A pre-owned Omega Constellation 1542.30 in great shape with all functions working correctly, featuring a clear crystal and a well-maintained bracelet.

  • Condition: great shape with minor scuffing on the bracelet
  • Crystal clarity: clear
  • Bracelet stretch: little to no stretch
Posted at
Mar 30, 2026, 10:08 AM
Active
[WTS] Omega Constellation Day-Date Ref. 396.1080 Two-Tone

Omega Constellation Day-Date Ref. 396.1080 Two-Tone

Omega - 396.1080 · $1,000
The Manhattan-era Constellation is a cleaner quartz watch design from the late 1980s, featuring a steel case, 18k yellow gold bezel, black Roman numerals, gold-accented integrated bracelet, and a white dial showing day and date via two independent subdials.

  • Condition: Good with expected light wear to the bracelet and case
  • Case Diameter: 33mm
  • Bezel Material: 18k yellow gold
  • Crystal Type: Sapphire
Posted at
Mar 29, 2026, 3:25 PM
Active
[WTS] Omega Constellation 168.027 1968 "Linen dial" with white gold bezel

Omega Constellation 168.027 1968 "Linen dial" with white gold bezel

Omega - 168.027 · $1,350
A used 1968 Omega Constellation featuring an automatic caliber 564 movement with a quickset date and a beautiful linen dial.

  • Condition: 7.5/10
  • Movement: caliber 564
  • Case condition: slight marks on the dial visible under strong artificial light
Posted at
Mar 29, 2026, 12:57 PM
Active
[WTS] 1959 Omega Constellation patina Pie Pan dial ref. 14381 with original bracelet!! Serviced!! - $1890 shipped!

1959 Omega Constellation patina Pie Pan dial ref. 14381 with original bracelet!! Serviced!! - $1890 shipped!

Omega - 14381 · $1,890
This vintage Omega Constellation Pie Pan automatic watch features a beautiful patina dial, rose gold hands and indices, and an original stainless steel case with genuine Omega bracelet. The watch has been serviced and keeps good time.

  • Condition: 9/10
  • Case size: 34.5mm
  • Movement caliber: 551
  • Bracelet type: Original Omega bracelet
Posted at
Mar 29, 2026, 10:57 AM
Active
[WTS] Omega Constellation Pie Pan 35mm Vintage Automatic Dog Leg 2852 168.005 Two Tone Watch - $1300 SHIPPED

Omega Constellation Pie Pan 35mm Vintage Automatic Dog Leg 2852 168.005 Two Tone Watch - $1300 SHIPPED

Omega - 2852-1 · $1,300
This Omega Constellation Pie Pan watch is a stunning and elegant example of Omega's dress watch heritage. The watch has an original, untouched dial and features a two-tone variant with solid yellow gold bezel and medallion. The case is made of steel.

  • Condition: Pre-owned, serviced a few years back
  • Case material: Steel, two tone (gold capped lugs)
  • Diameter: 35mm
  • Lug width: 18mm
Posted at
Mar 27, 2026, 4:27 PM
Active
Omega Constellation Globemaster Master Chronometer

Omega Constellation Globemaster Master Chronometer

The Omega Constellation Globemaster 39mm is a versatile dress watch with a dark blue pie pan dial and fluted tungsten carbide bezel. It has goldilocks proportions and a beautiful 3-row bracelet.

  • Condition: 98% pristine, minor hairline marks on lugs and possibly a faint desk diving mark on case or bracelet
  • Case dimensions: 39mm x 46.7mm lug to lug x 12.6mm thick
  • Bracelet type: 3-row with slightly curved central links
Posted at
Mar 31, 2025, 10:32 AM
Active