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

Reference 123.20.31.20.55.002

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

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] 1973 Omega Constellation Megaquartz Ref. 196.0015 Cal. 1310 - First Omega In-House Quartz Movement | $900

1973 Omega Constellation Megaquartz Ref. 196.0015 Cal. 1310 - First Omega In-House Quartz Movement | $900

Omega - 196.0015 · $900
The Omega Constellation Megaquartz Ref. 196.0015 features a 37 mm stainless steel case with an integrated bracelet and crisp silver dial. This rare version is in excellent condition, with minor markings on the bracelet.

  • Condition: Very good, almost NOS
  • Case Size: 37mm x 42.3mm stainless steel case
  • Thickness: 12.3mm
  • Lug Width: 18mm
Posted at
Nov 2, 2025, 12:03 PM
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[WTS] Omega Constellation Crosshair Ref. 168.005 | Great Original Condition (Serviced) | $2200

Omega Constellation Crosshair Ref. 168.005 | Great Original Condition (Serviced) | $2200

Omega - 168.005 · $2,260
The Omega Constellation Pie Pan Ref. 168.005 features a crosshair dial in a stainless steel 34mm case with dog-leg lugs. It has a silver sunburst dial and is powered by the Omega Caliber 561 chronometer-certified automatic movement.

  • Condition: Great original condition with minor scratches and patina dots
  • Case diameter: 34mm
  • Movement type: Automatic
  • Movement caliber: 561
Posted at
Nov 2, 2025, 11:54 AM
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[WTS] Omega Constellation Lady 595.0102 only for 299$ Shipped 🚢

Omega Constellation Lady 595.0102 only for 299$ Shipped 🚢

Omega - 595.0102 · $299
Up for sale is an Omega Constellation Lady featuring a stainless steel case with a case size of 22mm, paired with an aftermarket lizard strap.

  • Condition: Pre-owned with hairline scratches on the case and signs of aging on the dial
  • Case Size: 22mm diameter
  • Movement Type: Quartz
Posted at
Nov 2, 2025, 8:52 AM
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[WTS] Omega Constellation C-Case 168.0056 Rare Navy Blue Dial – $950 OBO

Omega Constellation C-Case 168.0056 Rare Navy Blue Dial – $950 OBO

Omega - 168.0056 · $950
This Omega Constellation C-Case features a rare navy blue dial in a classic design, along with an original Cal. 1010 movement and a clean, original navy dial.

  • Condition: Good shape and ready to wear
  • Bracelet size: 6.3"
  • Max bracelet size: 7.5"
  • Movement: Cal. 1010
Posted at
Oct 30, 2025, 11:07 PM
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[WTS] 1963 Vintage Omega Constellation Ref. 167.005 | No Date | All Original | Freshly Serviced Chronometer Cal 561 | Sharp Unpolished Dog Leg Lugs | Great Vintage Condition | $1830

1963 Vintage Omega Constellation Ref. 167.005 | No Date | All Original | Freshly Serviced Chronometer Cal 561 | Sharp Unpolished Dog Leg Lugs | Great Vintage Condition | $1830

Posted at
Oct 30, 2025, 8:29 AM
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[WTS] Omega Constellation Pie Pan Demi Gold Ref. 168.005 | Excellent Original Condition (with original straps and buckle, Omega red box & Serviced) | $2950

Omega Constellation Pie Pan Demi Gold Ref. 168.005 | Excellent Original Condition (with original straps and buckle, Omega red box & Serviced) | $2950

Posted at
Oct 27, 2025, 11:34 PM
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[WTS] Omega Constellation 168.054

Omega Constellation 168.054

Posted at
Oct 27, 2025, 12:37 PM
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[WTS] Omega Constellation 168.046

Omega Constellation 168.046

Posted at
Oct 27, 2025, 12:31 PM
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[WTS] 1961 Omega Constellation (Original Box / Papers

1961 Omega Constellation (Original Box / Papers

Omega - 14393 · $1,200
This is a 1961 Omega Constellation reference 14393 with a white dome dial and original outer cardboard box. The watch has a 34mm stainless and 14k gold capped case and is powered by an automatic cal 561 movement.

  • Condition: Very good, with minor wear
  • Case Size: 34mm
  • Movement: Omega automatic cal 561
Posted at
Oct 26, 2025, 11:05 PM
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