Omega Constellation Constellation Co-Axial 31 Stainless Steel / Yellow Gold / MOP

Reference 123.20.31.20.55.002

About this watch

The Omega Constellation Co-Axial 31 is a masterpiece of horology, blending luxury, precision, and history. This stunning timepiece boasts an exquisite design featuring stainless steel and yellow gold, complemented by a captivating Mother of Pearl (MOP) dial that shimmers like the ocean. Underneath lies the renowned Omega caliber 8520 automatic movement, a marvel of engineering with a power reserve of 50 hours and Co-Axial escapement, reducing friction for enhanced longevity and precision. With its water resistance of 100 meters and sapphire glass protection, this watch is perfect for daily wear. The comfortable design and adjustable links ensure a secure fit, while the gem-set indexes add an opulent touch. As a true investment piece, the Omega Constellation Co-Axial 31 combines timeless aesthetics with cutting-edge technology, making it an ideal choice for watch collectors, individuals seeking precision and reliability, and fashion enthusiasts alike.
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Key Features

  • Omega Caliber 8520 Automatic Movement
  • Co-Axial Escapement with Reduced Friction
  • Water Resistance of 100 Meters
  • Sapphire Glass Protection
  • Mother of Pearl (MOP) Dial
  • Stainless Steel and Yellow Gold Construction
  • Gem-Set Indexes for Opulent Touch

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 31 Stainless Steel / Yellow Gold / MOP
Reference
123.20.31.20.55.002
Movement
8520
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
31mm
Dial Color
White
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Omega Constellation 2 tone, 34mm, $799!

Omega Constellation 2 tone, 34mm, $799!

Omega - Constellation · $799
This Omega Constellation is a two-tone, 34mm watch from the 1990s with an 18k gold case and quartz movement. The dial is extremely clean and has minor scratches on the bezel.

  • Condition: very good
  • Case material: 18k gold
  • Movement type: quartz
  • Case size: 34mm
Posted at
Jul 1, 2025, 10:02 PM
Active
omega constellation ref 14381-2sc 14k gold on Bonklip 9k gold bracelet

omega constellation ref 14381-2sc 14k gold on Bonklip 9k gold bracelet

Omega - 14381-2sc · $3,100.003
This is a 1959 Omega 14k solid gold wristwatch with caliber 551 and serial number 17.xxxxxx. It has been serviced and runs perfectly.

  • Condition: Like new, serviced in July 2019
  • Bracelet material: 9k gold
  • Bracelet weight: 30.3g
  • Caliber: 551
Posted at
Jun 30, 2025, 7:59 PM
Active
[WTS] 1969 Omega Constellation Day-Date ref. 168.016 w/ Cal. 751 – Serviced – $575 shipped

1969 Omega Constellation Day-Date ref. 168.016 w/ Cal. 751 – Serviced – $575 shipped

Omega - 168.016 · $575
A classic 1969 Omega Constellation Day-Date ref. 168.016 powered by the chronometer-rated Cal. 751 movement, featuring a stainless steel case and an original signed crown.

  • Movement: Omega Caliber 751 automatic chronometer
  • Crystal: replacement plexiglass
  • Crown: correct original signed crown
Posted at
Jun 30, 2025, 11:55 AM
Active
[WTS] Omega Vingte Constellation 14381 - 1400$ - DHL

Omega Vingte Constellation 14381 - 1400$ - DHL

Omega - 14381 · $1,400
This Omega Constellation is a vintage watch from the 1960s, featuring an automatic 551 movement and an 18k gold and steel case and bracelet.

  • Condition: Good (9/10)
  • Case Material: 18k or 14k gold and steel
  • Caliber: Automatic 551
Posted at
Jun 30, 2025, 11:26 AM
Active
Omega Constellation Globemaster Master Chronometer

Omega Constellation Globemaster Master Chronometer

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