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

Reference 123.55.31.20.55.009

About this watch

The Omega Constellation 123.55.31.20.55.009 is a masterpiece of elegance and engineering, boasting an aura of sophistication with its round shape and 31mm diameter. The combination of white gold and mother of pearl creates a striking visual appeal, while the gem-set bezel elevates its luxurious presence. At the core of this timepiece is the Omega caliber 8421, featuring a free sprung-balance system and silicon balance-spring for exceptional reliability and longevity. The watch face is adorned with a unique snow-like texture on the mother of pearl dial, accompanied by gem-set indexes that twinkle like stars in the night sky. With a water resistance of 100 meters, this watch is built to withstand splashes and minor swimming sessions, making it an ideal choice for those who lead active lifestyles. The bracelet is crafted from white gold, matching the case perfectly, and feels luxurious against the skin with its adjustable fit. This timepiece embodies everything Omega stands for, masterfully combining beauty with precision.
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Key Features

  • Omega caliber 8421 automatic movement
  • Chronometer Certification for exceptional accuracy
  • Co-Axial Escapement technology for greater precision and stability
  • Self-Winding Mechanism for effortless winding
  • Water resistance of 100 meters
  • White gold case and bracelet for luxurious feel
  • Mother of pearl dial with unique snow-like texture

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 31 White Gold / Snow / Diamond Supernova
Reference
123.55.31.20.55.009
Movement
8421
Movement Features
  • Hours, Minutes, Seconds
  • Chronometer, Co-Axial Escapement
Case
31mm
Dial Color
White
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] 1960s Omega Constellation Pie Pan Ref. 168.005 | Caliber 561 Chronometer | Sharp Dog-Leg Lugs | Great Condition | All Original | $2500 (SERVICED)

1960s Omega Constellation Pie Pan Ref. 168.005 | Caliber 561 Chronometer | Sharp Dog-Leg Lugs | Great Condition | All Original | $2500 (SERVICED)

Omega - 168.005 · $2,500
A 1960s Omega Constellation Pie Pan watch with a silver sunburst dial, Chronometer-rated Caliber 561 automatic movement and sharp Dog-leg lugs, in excellent condition.

  • Condition: Great Condition | All Original
  • Movement: Serviced Automatic Chronometer-rated Caliber 561
  • Dial: Original Silver Sunburst Pie Pan dial
  • Case: 34.5mm Gold-capped construction, Sharp Dog-leg lugs with defined edges
Posted at
Apr 28, 2026, 9:16 AM
Active
[WTS] Rare Vintage Omega Constellation “Manhattan” Chronometer ST 368.1075 – Very Nice Condition

Rare Vintage Omega Constellation “Manhattan” Chronometer ST 368.1075 – Very Nice Condition

Omega - ST 368.1075 · $950
A rare vintage Omega Constellation “Manhattan” chronometer ref. ST 368.1075, characterized by its distinctive 'claws' or 'griffes' on the side of the case and an integrated bracelet.

  • Condition: Very nice vintage condition with light signs of honest wear
  • Movement: Automatic self-winding chronometer-certified movement (Omega Caliber 1110.11.40) with a 42-44 hour power reserve, 21 jewels
  • Case diameter: 35mm
  • Thickness: 7.5mm
Posted at
Apr 27, 2026, 8:59 PM
Active
[WTS] (Price reduced) 1966 Omega Constellation

(Price reduced) 1966 Omega Constellation

Omega - 168.005 · $2,400
A 1966 Omega Constellation in original condition featuring the 'dog leg' lugs and a cross hair dial. The watch remains in gorgeous condition with only minor scratches.

  • Condition: UNPOLISHED/UNTOUCHED with minor scratches on the case and caseback
  • Case material: Solid gold bezel + case back medallion, gold-capped lugs over solid stainless steel
  • Movement serial #: 24501601
  • Jewels: 24 jewels
Posted at
Apr 26, 2026, 10:14 AM
Active
[WTS] Omega Constellation Cal. 561 Ref. 168.005 | Great Condition (Serviced) | $1650

Omega Constellation Cal. 561 Ref. 168.005 | Great Condition (Serviced) | $1650

Omega - 168.005 · $1,650
The Omega Constellation ref. 168.005 stands as one of the most iconic vintage dress watches of the mid-1960s, admired for its balanced design and enduring appeal.

  • Condition: Great serviced condition with minor scratches and patina spots
  • Dial color: flat silver
  • Case size: 34mm diameter
  • Crystal material: plexiglass
Posted at
Apr 25, 2026, 11:56 PM
Active
[WTS] asking 800$ - Vintage Omega Constellation Manhattan Mens Date Watch (Working Condition)

asking 800$ - Vintage Omega Constellation Manhattan Mens Date Watch (Working Condition)

a vintage men's date watch from Omega's Constellation Manhattan collection

  • Condition: Working Condition
  • Price range: $800$
  • Vintage: true
Posted at
Apr 25, 2026, 8:11 PM
Active
[WTS] Omega Omega Constellation Ref. 14393/4 SC – 18K Solid Gold – 18K Gold Pie Pan Dial Price : 6000$

Omega Omega Constellation Ref. 14393/4 SC – 18K Solid Gold – 18K Gold Pie Pan Dial Price : 6000$

Omega - 14393/4 SC · $6,000
A stunning Omega Constellation Ref. 14393/4 SC watch in solid 18K yellow gold features a Pie Pan Dial, automatic movement Caliber 564 and classic star emblem above 6 o'clock.

  • Condition: Excellent vintage condition
  • Case material: 18K Solid Gold
  • Dial material: 18K Gold
  • Movement: Caliber 564, Automatic
Posted at
Apr 25, 2026, 1:24 PM
Active
[WTS] Omega Constellation Manhattan ref. 396.1070 - 33mm Quartz, Blue Hands & Logo, Very Clean

Omega Constellation Manhattan ref. 396.1070 - 33mm Quartz, Blue Hands & Logo, Very Clean

Omega - 396.1070 · $850
This is a vintage Omega Constellation Manhattan watch featuring a silvery white dial, blue hands and dial printing. The 33mm diameter case has a tonneau shape and wide integrated bracelet.

  • Condition: Very good
  • Case diameter: 33mm
  • Lug to lug length: 35.2mm
  • Bracelet size: ~6.75" wrist
Posted at
Apr 25, 2026, 8:32 AM
Active
[WTS] Omega Constellation 1968 with white gold bezel and 'linen' dial

Omega Constellation 1968 with white gold bezel and 'linen' dial

A used 1968 Omega Constellation featuring an automatic caliber 564 movement with a quickset date, white gold bezel, and 'linen' dial.

  • Condition: 7.5/10
  • Movement: caliber 564
  • Crystal: unsigned with minor scratches
  • Dial marks: slight marks visible under strong artificial light
Posted at
Apr 25, 2026, 3:06 AM
Active
[WTS] Omega Constellation Pie Pan Gold Filled Reference 14902 SERVICED

Omega Constellation Pie Pan Gold Filled Reference 14902 SERVICED

A vintage Omega Constellation Pie Pan from 1966, featuring a gold-filled case and serviced recently.

Posted at
Apr 24, 2026, 1:31 PM
Active