Omega Constellation Constellation Co-Axial 31 Stainless Steel / Black

Reference 123.10.31.20.01.001

Omega Constellation Co-Axial 31 Stainless Steel / Black

About this watch

The Omega Constellation Co-Axial 31 is a masterpiece of luxury watchmaking, boasting a stunning stainless steel casing and alluring black dial with stick and dot indexes. At the heart lies the Omega caliber 8520 movement, a marvel of engineering with 50-hour power reserve and chronometer certification. The watch's sleek design and robust features make it perfect for any occasion, while its water resistance up to 100 meters ensures you can wear it with confidence. As part of the Constellation family, this timepiece is steeped in heritage and precision, making it an exceptional value in the luxury category. Whether you're a professional or watch enthusiast, this watch is sure to leave a lasting impression.
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Key Features

  • Omega caliber 8520 movement
  • Chronometer certification
  • Sapphire glass
  • Water resistance up to 100 meters
  • Stainless steel casing
  • Black dial with stick and dot indexes
  • Dauphine hands

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 31 Stainless Steel / Black
Reference
123.10.31.20.01.001
Movement
8520
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 31mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Omega Constellation 168.017 (1966)

Omega Constellation 168.017 (1966)

Omega - 168.017 · $900
This Omega Constellation features a beautiful original 'C-Shape' dial and is accompanied by its genuine Omega 518 brick bracelet.

  • Condition: Good condition overall
  • Movement: Cal. 561
  • Bracelet: Genuine Omega 518 brick bracelet
Posted at
Dec 12, 2025, 10:03 AM
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[WTS] REDUCED Omega Constellation Gold Cap ( REF:168.018 ) $750 Shipped.....

REDUCED Omega Constellation Gold Cap ( REF:168.018 ) $750 Shipped.....

Omega - 168.018 · $750
A beautiful example of the classic Omega Constellation Automatic Chronometer from the late 1960s. It features an original silver sunburst dial with applied gold markers and date at 3 o'clock, a gold-capped stainless steel case (34mm), and an iconic Observatory medallion on the caseback.

  • Condition: Excellent condition, freshly serviced
  • Case size: 34mm diameter
  • Movement: Caliber 561
  • Crystal: Acrylic crystal
Posted at
Dec 12, 2025, 8:28 AM
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[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
Active
View listing on r/WatchExchange
[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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