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.
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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 Pie Pan ref. 167.005 – Tropical Dial – Cal. 551

Omega Constellation Pie Pan ref. 167.005 – Tropical Dial – Cal. 551

Omega - 167.005 · $1,650
A vintage Omega Constellation 'Pie Pan' from the 1960s with an original tropical dial, showing a warm golden/brown patina.

  • Condition: Very good overall for its age
  • Case Size: 34mm diameter
  • Movement Calibre: Cal. 551 (chronometer grade)
  • Dial Type: Original Pie Pan dial
Posted at
Apr 17, 2026, 7:20 AM
Active
View listing on r/WatchExchange
[WTS] Omega Constellation Quartz $500 SHIPPED

Omega Constellation Quartz $500 SHIPPED

Omega - Constellation Quartz · $500
This Omega Constellation Quartz is a pre-owned watch in good working order, measuring 36.6mm and featuring an aftermarket leather strap.

  • Condition: pre-owned working condition
  • Case size: 36.6mm
  • Strap type: aftermarket leather strap
Posted at
Apr 16, 2026, 11:16 PM
Active
View listing on r/WatchExchange
[WTS] Excellent Omega Constellation Ref 1335.76.00 MOP Dial Steel and Yellow Gold Two Tone Diamond's Bezel Ladies Watch W/ Original Box And Travel Case $1500

Excellent Omega Constellation Ref 1335.76.00 MOP Dial Steel and Yellow Gold Two Tone Diamond's Bezel Ladies Watch W/ Original Box And Travel Case $1500

Omega - 1335.76.00 · $1,500
This Omega Constellation ladies watch features a MOP dial, two-tone steel and yellow gold case, and diamond bezel. It comes with the original box and travel case.

  • Condition: In Preowned condition, With Little wear and Marks
  • Movement: Quartz
  • Case material: Stainless steel, Yellow Gold
  • Dial material: MOP (Mother of Pearl)
Posted at
Apr 16, 2026, 3:07 PM
Active
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[WTS] 1960s Omega Constellation Ref. 168.005 | Caliber 564 Chronometer | Sharp Dog-Leg Lugs | Great Condition | All Original | $2400 (SERVICED)

1960s Omega Constellation Ref. 168.005 | Caliber 564 Chronometer | Sharp Dog-Leg Lugs | Great Condition | All Original | $2400 (SERVICED)

Omega - 168.005 · $2,400
The Omega Constellation Ref. 168.005 is a highly sought-after dress watch from the 1960s, featuring a silver sunburst dial and solid gold faceted indices.

  • Condition: Great Condition | All Original | Serviced
  • Movement: Serviced Automatic Chronometer-rated Caliber 564
  • Dial: Original silver sunburst dial with applied gold-tone logo and faceted gold markers
  • Case: 34.5mm Gold-capped stainless steel construction with iconic Dog-leg lugs
Posted at
Apr 16, 2026, 9:38 AM
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[WTS] 1973 Omega Constellation ref. 168.0056 w/ Cal. 1011 – gold-capped case, solid 14k bezel – $1,050 all-in

1973 Omega Constellation ref. 168.0056 w/ Cal. 1011 – gold-capped case, solid 14k bezel – $1,050 all-in

Omega - 168.0056 · $1,050
A 1973 Omega Constellation ref. 168.0056 features a gold-capped case, solid 14k bezel, clean original dial, and well-preserved gold medallion on the caseback.

  • Condition: Good overall condition with expected hairline scratches from age and normal wear, original parts preserved
  • Case diameter: 34.5mm
  • Lug width: 19mm
  • Movement caliber: Cal. 1011
Posted at
Apr 16, 2026, 9:08 AM
Active
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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