Omega Constellation Constellation Co-Axial 27 Brushed Yellow Gold / MOP Supernova

Reference 123.50.27.20.55.002

About this watch

The Omega Constellation Co-Axial 27 is a masterpiece of luxury watchmaking, blending elegance and technological innovation. Its stunning brushed yellow gold case gleams with understated sophistication, while the Mother of Pearl dial adds a touch of opulence. The gem-set indexes twinkle like stars in the night sky, providing a perfect contrast against the white background. With its compact yet bold diameter of 27.00 mm, this watch is perfect for both casual outings and formal events. The round shape is timeless, ensuring that this piece won't go out of style anytime soon. The sapphire glass offers durability and provides a crystal-clear view of the stunning dial. What truly sets the Omega Constellation apart is its impressive movement - the self-winding mechanical Omega caliber 8521 combines traditional watchmaking with modern technology, featuring a Co-Axial escapement that reduces friction between parts for enhanced accuracy and longevity. This timepiece keeps you organized without sacrificing style, equipped with a date function and a water resistance rating of 100 meters. Wearing the Constellation Co-Axial 27 feels like putting on a piece of art, its weighty yet comfortable feel on the wrist is a testament to Omega’s craftsmanship.
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Key Features

  • Omega caliber 8521 self-winding mechanical movement
  • Mother of Pearl dial with gem-set indexes
  • Sapphire glass for scratch-free durability
  • Co-Axial escapement for enhanced accuracy and longevity
  • Date function for organization without sacrificing style
  • Water resistance rating of 100 meters for versatility

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 27 Brushed Yellow Gold / MOP Supernova
Reference
123.50.27.20.55.002
Movement
8521
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Yellow Gold 27mm
Dial Color
White
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Rare 1959 Omega Constellation w/ Railtrack Dial, Steel Case & Special Chronometer Movement

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Omega - 14381 · $800
A rare 1959 Omega Constellation with a railtrack dial and special chronometer movement. The watch has an original non-refinished silver dial with patina and an original stainless steel case with wear.

  • Condition: Pre-owned, needs service
  • Case size: 34.5mm
  • Diameter: 34.5mm
  • Movement accuracy: Special chronometer certified with high accuracy
Posted at
Apr 30, 2025, 11:28 AM
Active
1970s Omega Constellation Ref: 391.0801 Quartz with Box

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Omega - 391.0801 · $1,150.001
A 1970s Omega Constellation Ref: 391.0801 Quartz watch in excellent condition, featuring a 32mm stainless steel case and original horizontal grained silver dial.

  • Condition: Excellent with very light wear from use
  • Case Size: 32mm
  • Bracelet Links: 23
  • Movement Type: Quartz
Posted at
Apr 29, 2025, 5:49 PM
Active
2000s Omega Constellation Ref: 1502.30 Automatic

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This is a 2000s Omega Constellation Ref: 1502.30 Automatic watch, featuring a 34mm Stainless Steel case and an excellent original silver/white dial.

  • Condition: Very nice with some wear from use
  • Case Size: 34mm diameter
  • Bracelet Links: 21 links (+1 extra)
  • Bezel Type: fixed Stainless Steel bezel with recessed Roman Numerals
Posted at
Apr 29, 2025, 5:48 PM
Active
[WTS] VintageOmega Constellation Diamond SS/18kt YG

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This vintage Constellation features a diamond bezel and dial, with a quartz movement running properly. The watch has a 33.5mm case and fits a 7.5 inch wrist.

  • Condition: Good, with some minor flaws (dust under crystal/dial, missing end pieces on links)
  • Case Size: 33.5mm
  • Wrist Fit: 7.5 inch wrist
Posted at
Apr 28, 2025, 11:48 AM
Active
[WTS] RARE Omega Constellation 168.005 Champagne Linen Dial $2400 AUD

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Omega - 168.005 · $2,400
  • Dial color: Champagne Linen
Posted at
Apr 28, 2025, 1:58 AM
Active
[WTS] Omega Constellations De Luxe 18kt Solid Gold Case, Bracelet, and Dial w/ Original Box and Buckle ref. 168.004/14

Omega Constellations De Luxe 18kt Solid Gold Case, Bracelet, and Dial w/ Original Box and Buckle ref. 168.004/14

Omega - 168.004/14 · $7,150
A solid gold Omega Constellations De Luxe with a 18kt gold case, dial, and vintage aftermarket bracelet, featuring an automatic chronometer movement and original box and buckle.

  • Condition: Excellent
  • Case weight: ~58g
  • Bracelet weight: 34g
  • Bracelet repair: mesh repaired in two places
Posted at
Apr 27, 2025, 4:46 PM
Active
[WTS] Omega Constellation 167.005

Omega Constellation 167.005

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This Omega Constellation features a 36mm case, powered by the 551 movement, and has developed a nice patina on its dial.

  • Condition: Pre-owned with scratches and wear marks
  • Case size: 36mm diameter
  • Movement: 551 calibre
Posted at
Apr 27, 2025, 3:01 PM
Active
[WTS] Dressy Duo - Omega 35mm Constellation & Discontinued Mod Size, Tiffany Blue Tiffany East West

Dressy Duo - Omega 35mm Constellation & Discontinued Mod Size, Tiffany Blue Tiffany East West

A dressy duo of Omega and Tiffany watches, both recently serviced, with the Omega being an automatic and the Tiffany East West in Tiffany Blue.

  • Condition: essentially mint condition
  • Size1: 35mm diameter
  • Box1: no box
  • Papers1: no papers
Posted at
Apr 27, 2025, 2:03 PM
Active
[WTS] Omega Constellation Chronometer 168.0056 With Papers

Omega Constellation Chronometer 168.0056 With Papers

Omega - 168.0056 · $1,150
This Omega Constellation Chronometer is a great example of Gerald Genta's 'C-shape' design, featuring an Omega Caliber 1011 automatic movement that has been timegrapher tested for accuracy. The watch comes with original papers from a Japan boutique and includes a leather strap with buckle.

  • Condition: Vintage, very good condition
  • Movement: Omega Caliber 1011, automatic, chronometer-rated
  • Functions: Time and date
  • Case size: 35mm diameter
Posted at
Apr 27, 2025, 7:26 AM
Active