Omega Constellation Constellation Co-Axial 31 Red Gold / MOP

Reference 123.50.31.20.05.001

About this watch

The Omega Constellation Co-Axial 31 Red Gold / MOP (Model: 123.50.31.20.05.001) is a statement piece that balances elegance and functionality. Crafted from 18 Ct red gold, it features an exquisite Mother of Pearl dial with a unique, iridescent quality. The watch boasts a self-winding Omega Caliber 8521 movement with Co-Axial escapement, ensuring precision, stability, and durability. With a water resistance of up to 100 meters and a sapphire crystal glass, this timepiece is designed to keep up with your lifestyle. Its versatility makes it suitable for any occasion, whether formal or casual. The Omega Constellation Co-Axial 31 Red Gold / MOP is more than just a watch; it's a piece of art, a conversation starter, and a reliable companion.
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Key Features

  • 18 Ct red gold case
  • Mother of Pearl dial with iridescent quality
  • Self-winding Omega Caliber 8521 movement
  • Co-Axial escapement for precision and durability
  • Water resistance up to 100 meters
  • Sapphire crystal glass for scratch-resistant properties
  • Versatile design suitable for formal or casual occasions

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 31 Red Gold / MOP
Reference
123.50.31.20.05.001
Movement
8521
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Red Gold 31mm
Dial Color
White
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Omega Constellation Double Eagle Chronograph 41mm Reverse Panda Ref. 1819.51.91 - Co-Axial Cal. 3313

Omega Constellation Double Eagle Chronograph 41mm Reverse Panda Ref. 1819.51.91 - Co-Axial Cal. 3313

Omega - 1819.51.91 · $2,175
This Omega Constellation Double Eagle Chronograph features a 41mm stainless steel case, black dial, and automatic chronometer-certified movement with Co-Axial escapement. It has a reverse panda look and comes on an original integrated black rubber strap.

  • Condition: Solid, honest condition with superficial wear and light scratches
  • Case size: 41mm stainless steel
  • Diameter: 41mm
  • Bezel: black aluminum Roman numeral
Posted at
Mar 22, 2026, 8:48 PM
Active
[WTS] Omega Constellation Globemaster Annual Calendar Box & Papers

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The Omega Constellation Globemaster Annual Calendar features a sunburst grey dial, applied hour markers, and a clean annual calendar display powered by the in-house Co-Axial Master Chronometer Caliber 8922.

  • Condition: Great pre-owned condition with light signs of careful wear
  • Case size: 41mm
  • Material: stainless steel
  • Bracelet material: stainless steel
Posted at
Mar 22, 2026, 12:30 PM
Active
[WTS] 1963 Omega Constellation Ref. 168.005 | Onyx Markers | Dog Legs Lugs | All Original | only $1400 (SERVICED)

1963 Omega Constellation Ref. 168.005 | Onyx Markers | Dog Legs Lugs | All Original | only $1400 (SERVICED)

Omega - 168.005 · $1,400
This 1963 Omega Constellation is powered by a chronometer-rated Caliber 561 movement and features an all-original configuration with stainless steel case, date at 3 o'clock, and onyx markers.

  • Condition: some hairlines but case remains sharp; dial has some light spotting
  • Movement: Caliber 561, chronometer-rated automatic
  • Case material: stainless steel
  • Dimensions: [object Object]
Posted at
Mar 22, 2026, 10:57 AM
Active
Omega Constellation Globemaster Master Chronometer

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The Omega Constellation Globemaster 39mm is a versatile dress watch with a dark blue pie pan dial and fluted tungsten carbide bezel. It has goldilocks proportions and a beautiful 3-row bracelet.

  • Condition: 98% pristine, minor hairline marks on lugs and possibly a faint desk diving mark on case or bracelet
  • Case dimensions: 39mm x 46.7mm lug to lug x 12.6mm thick
  • Bracelet type: 3-row with slightly curved central links
Posted at
Mar 31, 2025, 10:32 AM
Active