Omega Constellation Constellation Co-Axial 31 White Gold / Snow / Diamond Supernova

Reference 123.55.31.20.55.007

About this watch

The Omega Constellation Co-Axial 31 White Gold / Snow / Diamond Supernova is a masterpiece that embodies luxury, precision, and style. With its stunning design and innovative movement, every element is crafted with care. The watch features a white gold case, gem-set bezel, mother of pearl dial, and dauphine hands. Its Co-Axial escapement reduces friction, leading to improved accuracy and longevity. The caliber 8421 boasts a power reserve of 50 hours and a frequency of 25,200 vibrations per hour. The watch is built to last with premium white gold and scratch-resistant sapphire glass. It's perfect for collectors, formal event attendees, or those who value precision and reliability in their timepieces.
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Key Features

  • White gold case
  • Gem-set bezel with diamonds
  • Mother of pearl dial
  • Co-Axial escapement movement
  • 50-hour power reserve
  • Scratch-resistant sapphire glass
  • Water resistance up to 100 meters

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 31 White Gold / Snow / Diamond Supernova
Reference
123.55.31.20.55.007
Movement
8421
Movement Features
  • Hours, Minutes, Seconds
  • Chronometer, Co-Axial Escapement
Case
White Gold 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!

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The OMEGA Constellation Ref. 123.20.35.20.06.001 features a distinctive stainless steel and yellow gold case with Roman numeral-engraved bezel, a captivating grey dial with date window at 3 o'clock, and an integrated yellow gold and stainless steel bracelet.

  • Condition: VERY GOOD with some light scratches on the bracelet
  • Case material: yellow gold and stainless steel
  • Bracelet size: ~7"
  • Bracelet condition: pre-sized
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Jan 3, 2026, 5:15 AM
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  • Case size: 34mm
  • Year of production: 1960s
  • Case material: 18K rose gold
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  • Condition: great, no major dents or scratches
  • Case Size: 35mm diameter
  • Movement: calibre 564 automatic
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  • Condition: Great condition with minor signs of wear
  • Bracelet size: 7-8 inches
  • Case dimensions: 35mm diameter, 38mm lug to lug, 23mm lug width, 7mm thickness
  • Movement accuracy: -17 spd
Posted at
Dec 28, 2025, 9:35 PM
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  • Condition: Great condition overall, light wear on stainless steel case
  • Case size: 39mm diameter
  • Movement type: automatic Co-Axial Master Chronometer
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A men's Omega Constellation Chronometer reference 198.0126 made in Switzerland with a quartz cal 1333 movement.

  • Condition: Preowned, with little wear and marks
  • Movement: Quartz Cal 1333
  • Country Of Manufacture: Switzerland
  • Case Material: Stainless steel
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  • Condition: Great, serviced
  • Movement: Omega Caliber 564, automatic, 24 jewels, chronometer certified
  • Case size: 34.5mm diameter
  • Lugs: Sculpted dog-leg lugs
Posted at
Dec 25, 2025, 11:14 PM
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  • Case Size: 39mm
  • Box And Papers: yes
Posted at
Dec 24, 2025, 11:19 AM
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