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] 2024 Omega Constellation - Full set Box and Papers - Ref# 131.33.41.21.04.001

2024 Omega Constellation - Full set Box and Papers - Ref# 131.33.41.21.04.001

The Omega Constellation is a flagship watch characterized by its half-moons and claws on the side of the case, making it a perfect combination of class and durability. The 41 mm case features a blue ceramic bezel, making it suitable for daily wear.

  • Condition: very good with light signs of wear on the case
  • Case size: 41mm diameter
  • Bezel material: blue ceramic
  • Band condition: near perfect
Posted at
Apr 26, 2025, 2:59 PM
Active
[WTS] Vintage Omega Constellation Automatic - Ultra Thin Movement

Vintage Omega Constellation Automatic - Ultra Thin Movement

Omega - 157.0002 · $999
This is a rare example of the ultra thin automatic Omega Constellation with a clean Genta-inspired design, all original and in exceptional shape.

  • Condition: Exceptional shape, all original
  • Case Size: 35mm
  • Dial Type: Original
  • Crown Type: Original
Posted at
Apr 26, 2025, 1:49 PM
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[WTS] Vintage Omega Constellation Chronometer - 168.0056 - C-Shaped Case - $825 Shipped!

Vintage Omega Constellation Chronometer - 168.0056 - C-Shaped Case - $825 Shipped!

Omega - 168.0056 · $825
This vintage Omega Constellation Chronometer features an automatic movement and a C-shaped case measuring approximately 35mm in diameter, with a date window at 3 o'clock.

  • Condition: good condition with signs of wear, consistent with its age
  • Case diameter: 35mm
  • Movement type: automatic
Posted at
Apr 26, 2025, 11:03 AM
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[WTS] Omega Constellation. PiePan. Automatic.

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This Omega Constellation features an automatic movement and a Pie Pan dial, with a stainless steel AM strap.

  • Condition: nice condition
  • Movement type: automatic
  • Strap: AM strap
Posted at
Apr 25, 2025, 3:30 PM
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[WTS] Omega Constellation Co-Axial Chronometer, or, "We have PRX at home"

Omega Constellation Co-Axial Chronometer, or, "We have PRX at home"

A 35mm Omega Constellation Co-Axial Chronometer with a reverse clous de paris dial, powered by the Caliber 2500 chronometer movement.

  • Condition: Good, with minor hairline scratches on case and bracelet
  • Diameter: 35mm
  • Lug To Lug: 38.4mm
  • Thickness: 10.8mm
Posted at
Apr 25, 2025, 11:54 AM
Active
Omega Constellation CALENDAR Ref 2943 Vintage, Automatic, Gold Filled on Bracelet, 34 mm. From 1959, Serviced, New Price Reduction

Omega Constellation CALENDAR Ref 2943 Vintage, Automatic, Gold Filled on Bracelet, 34 mm. From 1959, Serviced, New Price Reduction

Omega - 29435 SC · $1,395.001
This Omega Constellation CALENDAR Ref 2943 is a vintage automatic watch made of stainless steel and gold capped, featuring an original cream dial. The movement is Caliber #504, 24 Jewels, In House, and was serviced on April 15, 2022.

  • Condition: Very good condition with wear from use
  • Case size diameter: 35 mm
  • Case thickness: 13.1 mm
  • Bracelet type: Omega Stainless Steel bracelet Gold Filled 20 Microns with Deployment Buckle
Posted at
Apr 24, 2025, 2:42 AM
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