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

Reference 123.20.31.20.05.002

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

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 Ref. 123.20.35.20.06.001 Yellow Gold Two-Tone - COMPLETE SET!

OMEGA Constellation Ref. 123.20.35.20.06.001 Yellow Gold Two-Tone - COMPLETE SET!

OMEGA - 123.20.35.20.06.001 · $3,250
The OMEGA Constellation Ref. 123.20.35.20.06.001 is a sophisticated timepiece that celebrates the enduring legacy of OMEGA's iconic Constellation collection, featuring a distinctive stainless steel and yellow gold case with Roman numerals on a polished bezel.

  • Condition: VERY GOOD, with some light scratches on bracelet
  • Case material: stainless steel and yellow gold
  • Bracelet size: ~7" wrist
Posted at
Dec 12, 2025, 1:09 AM
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[WTS] 1971 Omega Constellation C-Case ref. 168.0056, gold-capped chronometer cal. 1011 – serviced Oct 2025 – $975 shipped

1971 Omega Constellation C-Case ref. 168.0056, gold-capped chronometer cal. 1011 – serviced Oct 2025 – $975 shipped

Omega - 168.0056 · $975
A 1971 Omega Constellation C-Case chronometer with a gold-capped stainless steel case, solid gold bezel, and warm champagne dial.

  • Condition: Excellent condition with normal wear from honest use
  • Caliber: Omega cal. 1011
  • Movement Service Date: Oct 2025
  • Case Dimensions: 40mm diameter
Posted at
Dec 11, 2025, 4:07 PM
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[WTS] Omega Constellation super nice condition, complete bracelet. Cal. 751 ref. 168.045. Complete bracelet. Shipping from El Salvador, price inculdes shipping, custom fees. No trades. $1200 - find me on IG as Boldervintage.

Omega Constellation super nice condition, complete bracelet. Cal. 751 ref. 168.045. Complete bracelet. Shipping from El Salvador, price inculdes shipping, custom fees. No trades. $1200 - find me on IG as Boldervintage.

Omega - 168.045 · $1,200
This Omega Constellation is complete with its original bracelet, offering a stylish and premium accessory for any watch enthusiast.

  • Condition: super nice condition
  • Shipping Included: true
  • Custom Fees Included: true
Posted at
Dec 11, 2025, 12:39 PM
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[WTS] Omega Constellation Chronometer Quartz 198.0126 Cal.1333 Quartz Push Men watch

Omega Constellation Chronometer Quartz 198.0126 Cal.1333 Quartz Push Men watch

Omega - 198.0126 Cal.1333
Posted at
Dec 11, 2025, 3:52 AM
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[WTS] Omega Constellation 18K Rose Gold Silver Pie Pan Dial 1960

Omega Constellation 18K Rose Gold Silver Pie Pan Dial 1960

Omega - 14393 · $8,000
This is a very rare 1960s Omega Constellation Ref. 14393 in 18K rose gold, one of the harder to find variants due to its limited production.

  • Material: 18K rose gold
  • Production Year: 1960s
Posted at
Dec 10, 2025, 11:25 AM
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[WTS] 1960's Omega Constellation Ref. CD 168.017 14k gold capped automatic chronometer

1960's Omega Constellation Ref. CD 168.017 14k gold capped automatic chronometer

Omega - CD 168.017 · $900
A 1966 Omega Constellation Ref. CD 168.017 features a 14k yellow gold capped stainless steel case and a fantastic dial with a few small scratches on the crystal.

  • Condition: Good used condition
  • Year: 1966
  • Case material: 14k yellow gold capped stainless steel
Posted at
Dec 10, 2025, 12:00 AM
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[WTS] omega constellation diamond dial watch $1395

omega constellation diamond dial watch $1395

Omega - null · $1,395
  • Diamond dial: Diamond dial on the Omega Constellation watch
Posted at
Dec 9, 2025, 12:03 PM
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[WTS] Omega Constellation f300Hz • Cushion Case • Gold-Plated • New Battery - $800

Omega Constellation f300Hz • Cushion Case • Gold-Plated • New Battery - $800

Omega - Constellation f300Hz (ESA 9162) · $800
This Omega Constellation features a cushion-shaped case with gold-plated plating, a beautiful sunburst champagne dial, and an acrylic crystal. The watch has a thin and comfortable design.

  • Condition: Exceptional for ~50 years old
  • Case Shape: cushion-shaped
  • Case Plating: gold-plated
  • Dial Type: sunburst champagne
Posted at
Dec 8, 2025, 9:05 PM
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[WTS] Omega constellation C Ref 168.019

Omega constellation C Ref 168.019

Omega - 168.019 · $1,300
For sale is my Omega constellation type C ref 168.019, which comes with the original brick style omega bracelet.

  • Condition: Pre-owned, some damage (cracked crystal)
  • Bracelet type: Original brick style
  • Crown origin: Constellation pie pan
  • Serviced: Yes, couple years ago
Posted at
Dec 7, 2025, 4:58 PM
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