Omega Constellation Constellation Co-Axial 31 Stainless Steel / MOP

Reference 123.10.31.20.05.001

Omega Constellation Co-Axial 31 Stainless Steel / MOP

About this watch

The Omega Constellation Co-Axial 31 Stainless Steel / MOP is a masterpiece of luxury watchmaking, boasting a stunning round shape with a diameter of 31 mm. The polished stainless steel case radiates sophistication, while the mesmerizing mother of pearl dial shifts colors depending on the light. This certified chronometer features an automatic movement (Omega caliber 8520) with a frequency of 25,200 vibrations per hour and a power reserve of up to 50 hours. With its versatility, exceptional design, and reliable movement, this timepiece is perfect for dressing up or casual wear. Its robust water resistance of 100 meters ensures it can withstand splashes of water or a day at the beach. As an investment in quality, craftsmanship, and timeless design, the Omega Constellation Co-Axial 31 is a worthy luxury watch that will stand the test of time.
Buy Now on Jomashop
This is an affiliate link
MSRP: $6,300
Market Price: $2,253

Key Features

  • Automatic movement (Omega caliber 8520)
  • Polished stainless steel case
  • Mesmerizing mother of pearl dial
  • Certified chronometer
  • Water resistance of 100 meters
  • Power reserve up to 50 hours
  • Robust and durable design

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 31 Stainless Steel / MOP
Reference
123.10.31.20.05.001
Movement
8520
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 31mm
Dial Color
White
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Omega Constellation Automatic | Stainless Steel and Gold | Reference 1202.30.00

Omega Constellation Automatic | Stainless Steel and Gold | Reference 1202.30.00

Omega - 1202.30.00 · $3,200
The Omega Constellation Automatic features a stunning lattice pattern dial and a thin, flush case for comfortable daily wear.

  • Condition: Excellent Pre-Owned
  • Case size: 35.5MM diameter
  • Serial number date: 1999
Posted at
Apr 20, 2026, 1:51 PM
Active
View listing on r/WatchExchange
[WTS] 1960s Omega Constellation Pie Pan Ref. 167.005 | Symmetrical No-Date Dial | Caliber 551 Chronometer | Great unpolished Condition | All Original | $ 2100 (SERVICED)

1960s Omega Constellation Pie Pan Ref. 167.005 | Symmetrical No-Date Dial | Caliber 551 Chronometer | Great unpolished Condition | All Original | $ 2100 (SERVICED)

Omega - 167.005 · $2,100
A mid-century minimalist watch featuring a rare No-Date configuration and the iconic Pie Pan dial, housing the legendary Caliber 551 movement.

  • Condition: Excellent unpolished condition
  • Movement: Serviced Omega Caliber 551 Automatic (24 Jewels), Chronometer rated
  • Dial: Original Silver Sunburst Pie Pan dial with applied steel markers and hands
  • Case: 34.5mm Stainless Steel construction, 8 stars visible on Observatory caseback
Posted at
Apr 20, 2026, 1:32 PM
Active
View listing on r/WatchExchange
[WTS] 1966 Omega Constellation ref. 168.005 w/ Cal. 561 Serviced – crosshair dome dial – $1450 all-in

1966 Omega Constellation ref. 168.005 w/ Cal. 561 Serviced – crosshair dome dial – $1450 all-in

Omega - 168.005 · $1,450
This is a 1966 Omega Constellation ref. 168.005, featuring an original silver crosshair domed dial and Cal. 561 automatic chronometer movement.

  • Condition: Pre-owned with minor signs of aging
  • Case Size: 34.5mm diameter
  • Crystal Type: Plexiglass
  • Crown Period Correct: No
Posted at
Apr 20, 2026, 9:28 AM
Active
View listing on r/WatchExchange
[WTS] *Rare* Vintage 1960s 168.005 Rose Gold Date Omega Constellation with Vertical Brushed dial- Serviced

*Rare* Vintage 1960s 168.005 Rose Gold Date Omega Constellation with Vertical Brushed dial- Serviced

Omega - 168.005 · $1,200
This vintage Omega Constellation Date features a vertical brushed dial and the Omega 561 Caliber movement, which has been serviced.

  • Condition: good condition
  • Movement caliber: Omega 561
  • Dial finish: vertical brushed
  • Case dimensions: [object Object]
Posted at
Apr 19, 2026, 6:20 PM
Active
View listing on r/WatchExchange
[WTS] Vintage 1960s 168.005 Date Yellow Gold Omega Constellation- Serviced $950

Vintage 1960s 168.005 Date Yellow Gold Omega Constellation- Serviced $950

Omega - 168.005 · $950
  • Condition: Good, some minor cosmetic damage
  • Movement caliber: Omega 565
  • Dial condition: Very good for its age
  • Case dimensions: [object Object]
Posted at
Apr 19, 2026, 6:15 PM
Active
View listing on r/WatchExchange
[WTS] OMEGA Constellations Chronometer certified 167.021, serviced

OMEGA Constellations Chronometer certified 167.021, serviced

OMEGA - 167.021 · $1,300
This is a rare Omega Constellation Chronometer certified model, featuring an ultra-thin design and small size but good wrist presence.

  • Condition: Excellent, with normal signs of wear and used
  • Movement: Cal 712 Automatic 24 Jewels, 19800 beats per hour
  • Dial: Original silver dial and handset
  • Crystal: Acrylic Crystal free from scratches, signed in the center by Omega
Posted at
Apr 19, 2026, 10:26 AM
Active
View listing on r/WatchExchange
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