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

Reference 123.25.31.20.55.003

About this watch

The Omega Constellation Co-Axial 31 is a masterpiece that beautifully marries form and function. With its luxurious materials, sophisticated design, and reliable movement, it’s a watch that is sure to be cherished for generations. The combination of stainless steel and yellow gold creates a striking contrast that is both modern and classic. The gem-set bezel adds a touch of glamour, making it perfect for formal occasions or everyday wear. The dial is made of exquisite Mother of Pearl, which not only enhances its beauty but also gives it a dynamic quality. Depending on the light, the dial can appear in various colors, ranging from shimmering white to soft pastel hues. Featuring Dauphine hands, the watch ensures excellent readability. At the heart of the Constellation Co-Axial 31 lies the Omega caliber 8520, an automatic movement known for its precision and reliability. The Co-Axial escapement is a significant innovation that reduces friction between the parts, enhancing the watch's longevity and accuracy. With a water resistance of 100 meters, this watch is ideal for daily wear. Whether you’re splashing in the pool or caught in the rain, the Omega Constellation can handle it all.
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Key Features

  • Omega caliber 8520 automatic movement
  • Sapphire crystal glass
  • Water resistance up to 100 meters

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 31 Stainless Steel / Yellow Gold / Diamond / MOP
Reference
123.25.31.20.55.003
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] 1968 Omega Constellation Ref. 157.0001 – Ultra-Thin Cal. 712 Chronometer – Blue Textured Dial – Omega Mesh Bracelet – $1350 Shipped Worldwide

1968 Omega Constellation Ref. 157.0001 – Ultra-Thin Cal. 712 Chronometer – Blue Textured Dial – Omega Mesh Bracelet – $1350 Shipped Worldwide

Omega - 157.0001 · $1,350
A 1968 Omega Constellation with an ultra-thin chronometer-rated Cal. 712 movement, featuring a blue textured dial and original unpolished case.

  • Condition: honest vintage condition
  • Movement: Omega Cal. 712 (ultra-thin, chronometer-rated)
  • Case size: 34.5mm
  • Dial description: original textured blue dial
Posted at
May 8, 2025, 9:46 AM
Active
[WTS] Omega Constellation C-shape Chronometer 168.0056

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Omega - 168.0056 · $750
This Omega Constellation Ref. 168.0056 features an automatic chronometer movement, gold plated stainless steel case, and a champagne dial with applied indices.

  • Condition: excellent condition
  • Movement: Cal. 1011
  • Case material: gold plated stainless steel
  • Case size: 35mm (excluding crown)
Posted at
May 7, 2025, 12:45 PM
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[WTS] Vintage Omega Constellation f300Hz Electronic ( Ref:198.002 ) Serviced..$485 Shipped..

Vintage Omega Constellation f300Hz Electronic ( Ref:198.002 ) Serviced..$485 Shipped..

Omega - 198.002 · $485
The Omega Electronic Constellation Chronometer features a Cal. 1250 F300 movement with a pair of tuning forks vibrating at 300Hz for precise timekeeping.

  • Condition: Serviced, original dial in great condition, minor scratches on the caseback
  • Movement: F300 Hz Quartz Movement
  • Case material: Stainless Steel (Gold Plated)
  • Diameter: 38 mm diameter (w/o crown)
Posted at
May 6, 2025, 2:50 PM
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This is a black dial Omega Constellation Day Date from the 1980s, powered by a quartz movement and featuring a steel case with a size of 33mm.

  • Year: 1980s
  • Dial Material: Black Dial Material: Steel
Posted at
May 6, 2025, 10:04 AM
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[WTS] Vintage Omega Constellation Chronometer - 168.0056 - C-Shaped Case - $799 Shipped!

Vintage Omega Constellation Chronometer - 168.0056 - C-Shaped Case - $799 Shipped!

Omega - 168.0056 · $799
A vintage Omega Constellation Chronometer with a C-shaped case, inspired by Gerald Genta, featuring an automatic movement and date window at 3 o'clock.

  • Condition: Good condition with signs of wear
  • Case shape: C-Shaped Case
  • Case size: 35mm diameter
  • Movement type: Automatic
Posted at
May 5, 2025, 3:48 PM
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[WTS] Rare 1956 Omega Constellation in Rose Gold / SS

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This is an older Omega Constellation model from 1956, featuring one of the first automatic 5xx series movements. The watch has a smooth winding mechanism and looks great in natural light.

  • Condition: Pre-owned with a scratch on the dial between 1 and 2
  • Movement series: 5xx series (automatic)
  • Case diameter: 34mm
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May 4, 2025, 7:23 PM
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The seller is listing a collection of five watches for sale, including a Hamilton Intramatic Chronograph, Baltic Aquascaphe GMT, Longines Legend Diver 36mm Red Dial, Omega Constellation 35mm, and Tiffany Eastwest.

  • Condition: pristine
  • Movement: Soprod C125 GMT
  • Case size: 40/20mm
  • Crystal: domed sapphire
Posted at
May 4, 2025, 5:18 PM
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[WTS] Omega Constellation. PiePan. Gorgeous Dial.

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This Omega Constellation features a Pie Pan dial and is an automatic watch. It comes with an AM strap.

  • Condition: nice condition
  • Case size: 40mm diameter
  • Strap material: AM strap
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May 4, 2025, 3:12 PM
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[WTS] Omega Constellation Co-Axial Chronometer, or, "We have PRX at home"

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The Omega Constellation Co-Axial Chronometer features a 35mm case size, Caliber 2500 chronometer movement, and a reverse clous de paris dial.

  • Condition: Good (with some hairline scratches)
  • Case dimensions: 35mm diameter, 38.4mm lug-to-lug, 10.8mm thickness
  • Bracelet size: adjustable to fit a 6.75 inch wrist
  • Movement type: Caliber 2500 chronometer, Co-Axial movement
Posted at
May 4, 2025, 11:47 AM
Active