Omega Constellation Constellation Co-Axial 31 Stainless Steel / Black

Reference 123.10.31.20.01.001

Omega Constellation Co-Axial 31 Stainless Steel / Black

About this watch

The Omega Constellation Co-Axial 31 is a masterpiece of luxury watchmaking, boasting a stunning stainless steel casing and alluring black dial with stick and dot indexes. At the heart lies the Omega caliber 8520 movement, a marvel of engineering with 50-hour power reserve and chronometer certification. The watch's sleek design and robust features make it perfect for any occasion, while its water resistance up to 100 meters ensures you can wear it with confidence. As part of the Constellation family, this timepiece is steeped in heritage and precision, making it an exceptional value in the luxury category. Whether you're a professional or watch enthusiast, this watch is sure to leave a lasting impression.
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Key Features

  • Omega caliber 8520 movement
  • Chronometer certification
  • Sapphire glass
  • Water resistance up to 100 meters
  • Stainless steel casing
  • Black dial with stick and dot indexes
  • Dauphine hands

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 31 Stainless Steel / Black
Reference
123.10.31.20.01.001
Movement
8520
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 31mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] 10k Gold Filled Omega Constellation. STEAL DEAL

10k Gold Filled Omega Constellation. STEAL DEAL

Omega - Constellation · $555
This vintage Omega Constellation is a mid-century design in a classic 34mm case that exudes Swiss elegance.

  • Case size: 34mm
Posted at
Feb 6, 2026, 10:59 PM
Active
View listing on r/WatchExchange
[WTS] Omega Double Eagle Constellation | Open Case Back Chronograph | Reference 1819.51.91

Omega Double Eagle Constellation | Open Case Back Chronograph | Reference 1819.51.91

Omega - 1819.51.91 · $4,900
This Omega Double Eagle Constellation features an open case back showcasing the movement, with a 41MM case size and powered by Co-Axial calibre 3313.

  • Condition: Excellent Pre-Owned
  • Case size: 41MM
  • Crystal status: replaced
  • Strap type: OEM rubber strap
Posted at
Feb 6, 2026, 2:50 PM
Active
View listing on r/WatchExchange
[WTS] Omega Double Eagle Constellation | Open Case Back Chronograph | Reference 1819.51.91

Omega Double Eagle Constellation | Open Case Back Chronograph | Reference 1819.51.91

Omega - 1819.51.91
a Omega Double Eagle Constellation watch with an open case back chronograph, details to be specified.

  • Case back type: Open Case Back
Posted at
Feb 6, 2026, 2:47 PM
Active
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[WTS] Omega Constellation Pie Pan 168.005 w/bracelet | All original | $2500 shipped (SERVICED)

Omega Constellation Pie Pan 168.005 w/bracelet | All original | $2500 shipped (SERVICED)

Omega - 168.005 · $2,500
A classic mid-60s Constellation with an iconic pie-pan dial and stainless steel case, powered by Omega's chronometer-rated Caliber 561.

  • Condition: All original
  • Movement caliber: Cal. 561 Automatic
  • Case material: Stainless Steel
  • Bracelet type: Original Omega bracelet
Posted at
Feb 6, 2026, 11:22 AM
Active
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[WTS] Mint Omega Gold-Capped Constellation White Sunburst Dial - Ref. 168.018 - Caliber 564 Chronometer Automatic Date - From 1969 - $2300 Shipped, Duties Covered!

Mint Omega Gold-Capped Constellation White Sunburst Dial - Ref. 168.018 - Caliber 564 Chronometer Automatic Date - From 1969 - $2300 Shipped, Duties Covered!

Omega - 168.018 · $2,300
This Omega Constellation features a gold-capped case with a crisp sunburst dial and thick hour markers at the quarters. The watch has a 35mm diameter (excluding the crown) and is powered by an excellent caliber 564 automatic movement with date.

  • Condition: Mint, likely new-old-stock
  • Movement caliber: 564 Chronometer Automatic Date
  • Case dimensions: 35mm diameter excluding crown
  • Lug type: straight lugs
Posted at
Feb 5, 2026, 1:28 PM
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View listing on r/WatchExchange
[WTS] 1950s Omega Constellation Calendar Chronometer Certified 2943-1SC, 14k bezel, serviced! - $1365 shipped!!

1950s Omega Constellation Calendar Chronometer Certified 2943-1SC, 14k bezel, serviced! - $1365 shipped!!

Omega - 2943-1SC · $1,365
A beautiful vintage Omega Constellation Calendar automatic winding watch, circa 1957, with a 14k solid gold bezel and serviced in 2025.

  • Condition: 9/10
  • Case size: 35mm
  • Caliber: 504 chronometer grade
Posted at
Feb 5, 2026, 7:30 AM
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Omega Constellation Globemaster Master Chronometer

Omega Constellation Globemaster Master Chronometer

Omega - 130.30.39.21.03.001 · $4,650
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
View listing on RolexForums