Omega Constellation Constellation Co-Axial 31 Stainless Steel / MOP

Reference 123.10.31.20.55.001

Omega Constellation Co-Axial 31 Stainless Steel / MOP

About this watch

The Omega Constellation Co-Axial 31 is a stunning piece that beautifully marries function and form. With its exquisite design, reliable movement, and versatile nature, it’s a watch that can easily become a cherished part of your collection. This timepiece is perfect for anyone who appreciates fine craftsmanship and luxury, whether you’re a watch collector, a business professional, or someone who enjoys elegant accessories. The Omega Constellation Co-Axial 31 is not just a statement piece; it’s a testament to the legacy of innovation and excellence that Omega embodies. Its Chronometer certification ensures accuracy, while its water resistance up to 100 meters makes it suitable for swimming and snorkeling. This watch can be dressed up or down, making it an excellent addition to any wardrobe. When you wear an Omega, you’re embracing a legacy of precision and elegance.

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Key Features

Omega caliber 8520 movement
Sapphire crystal glass
100m water resistance
Stunning MOP dial
Gem-set indexes
Chronometer certified for accuracy

Specifications

Brand

Omega

Family

Constellation

Model

Constellation Co-Axial 31 Stainless Steel / MOP

Reference

123.10.31.20.55.001

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

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Up for sale is a **1964 Omega Constellation Pie Pan ref. 168.005**, featuring the classic **dog-leg lugs and cal. 561 movement**.

Condition: Excellent for its age
Movement: cal. 561
Dial condition: Excellent for its age
Serviced: Yes (in November 2025)

Posted at

Mar 31, 2026, 1:00 PM

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Condition: Pre-owned, small age-related wear throughout
Case Size: 33MM
Bracelet Length Stainless: up to 7.5 inches
Bracelet Length Two Tone: just over 7 inches

Posted at

Mar 30, 2026, 9:42 PM

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Condition: pre-owned
Diameter: 35mm
Lug width: 18mm
Strap material: red leather

Posted at

Mar 30, 2026, 8:10 PM

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Case shape: cushion case
Dial color: champagne dial

Posted at

Mar 30, 2026, 7:29 PM

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Condition: Good daily wear
Lume quality: nice
Case size: 38/39mm
Shipping method: Fedex with insurance

Posted at

Mar 30, 2026, 6:30 PM

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1959 Omega Constellation ref. 14393 gold capped w/ Cal. 561 – crosshair dial – $1575 shipped

Omega - 14393 · $1,575

1959 Omega Constellation ref. 14393 with chronometer-grade Cal. 561 automatic movement, clean original sunburst crosshair dial, and a very honest overall presentation.

Condition: Excellent with honest presentation
Movement: Cal. 561 automatic movement
Dial: Original sunburst crosshair dial
Service: Freshly serviced in March 2026

Posted at

Mar 30, 2026, 12:58 PM

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Condition: great shape with minor scuffing on the bracelet
Crystal clarity: clear
Bracelet stretch: little to no stretch

Posted at

Mar 30, 2026, 10:08 AM

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Omega Constellation Day-Date Ref. 396.1080 Two-Tone

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Condition: Good with expected light wear to the bracelet and case
Case Diameter: 33mm
Bezel Material: 18k yellow gold
Crystal Type: Sapphire

Posted at

Mar 29, 2026, 3:25 PM

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View listing on r/WatchExchange