Omega Constellation Constellation Co-Axial 31 Stainless Steel / Red Gold / Brown

Reference 123.20.31.20.13.001

Omega Constellation Co-Axial 31 Stainless Steel / Red Gold / Brown

About this watch

The Omega Constellation Co-Axial 31 is a stunning blend of sophistication and mechanical excellence, featuring a unique combination of red gold and stainless steel that creates a striking contrast. The rich brown dial adds warmth to any outfit, while the round case (31mm diameter) sits comfortably on the wrist. The sapphire glass ensures scratch resistance, and the open case back showcases Omega's precision engineering. At its heart lies the Omega Caliber 8520, an automatic movement renowned for reliability and performance. This chronometer has undergone rigorous testing to ensure accuracy, with a power reserve of 50 hours and a frequency of 25,200 vibrations per hour. The Co-Axial escapement reduces friction between components, improving accuracy and extending the watch's lifespan. The Omega Constellation Co-Axial 31 provides an elegant display of time and date, with Dauphine hands gliding smoothly across the dial. Its water resistance rating of 100 meters makes it perfect for active lifestyles or spontaneous adventures. The understated elegance allows it to transition seamlessly from day to night, complementing any outfit.

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Key Features

Omega Caliber 8520 Automatic Movement
Chronometer Accuracy and 50-Hour Power Reserve
Sapphire Glass Scratch Resistance
Open Case Back for Precision Engineering
Red Gold and Stainless Steel Combination
31mm Diameter Round Case
Water Resistance up to 100m

Specifications

Brand

Omega

Family

Constellation

Model

Constellation Co-Axial 31 Stainless Steel / Red Gold / Brown

Reference

123.20.31.20.13.001

Movement

8520

Movement Features

Hours, Minutes, Seconds
Date
Chronometer, Co-Axial Escapement

Case

31mm

Dial Color

Brown

Crystal

Sapphire

Water Resistance

100

Current Listings

Omega Constellation Day-Date Quartz Just Serviced c.1980

Omega - Constellation Day-Date · $999

This is a classic Omega Constellation with day-date display and slim quartz profile from the 1980s. It has been recently serviced and is running properly.

Condition: Set watch only, with some wear on the case and light marks on the crystal
Era: c.1980
Movement Type: Quartz
Functionality: Day-Date

Posted at

Jan 30, 2026, 8:34 PM

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Omega Constellation Ref. 1267.15.00 - Diamond Bezel/Gold Bar Bracelet/Textured Dial | Box/Cards

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This is an Omega Constellation Ref. 1267.15.00, featuring a diamond bezel and gold bar bracelet on a textured yellow dial.

Condition: Excellent used condition
Case diameter: 22.5 mm
Water resistance: 30m depth rating
Movement type: Quartz precision movement

Posted at

Jan 30, 2026, 11:31 AM

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Omega Constellation TV 168.047 RARE GREY DIAL SERVICED

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This Omega Constellation TV from the 70s features a rare dark gray dial with soleil finish and is completely original in all its parts.

Condition: Original, serviced
Year: 1971
Case size: 33x39mm (crown excluded)
Caliber: Automatic 1001 Omega

Posted at

Jan 30, 2026, 4:43 AM

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Tropical Dial Omega Pie Pan Constellation 168.005

Omega - 168.005 · $1,600

For sale is a stunning Tropical dial Omega Pie Pan Constellation watch.

Dial type: Tropical dial

Posted at

Jan 29, 2026, 12:06 PM

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Redial Omega Pie Pan Constellation 168.005 - Polished case with sharp edges

Omega - 168.005 · $1,600

For sale a beautiful Omega Pie Pan Constellation with Top notch redial quality and Case polished with sharp edges.

Redial quality: top notch
Shipping options: Fedex/DHL

Posted at

Jan 29, 2026, 12:01 PM

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Omega Constellation 🌌 perpetual calendar 📅 blue dial Quartz movement!

Omega - Constellation Perpetual Date Black Silver Mens Watch, Stamp code 1551 / 861 · $1,250

This Omega Constellation is a rare quartz perpetual calendar watch with a blue dial. The sunburst dial appears to change color depending on the angle and lighting, ranging from ocean blue to navy blue or blue grey to blue purple.

Condition: Runs like new, serviced in 2023
Movement: quartz
Battery status: new
Case material: unknown (assumed metal due to 18k stamp)

Posted at

Jan 28, 2026, 4:29 PM

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Omega Constellation Automatic | Stainless Steel and Gold | Reference 1202.30.00

Omega - 1202.30.00 · $6,500

Posted at

Jan 28, 2026, 3:35 PM

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Vintage Omega Trio – Century / Genève Dynamic / Constellation Quartz

Omega - 121001 & 166.039 & 198.0111 · $650

A trio of vintage Omega watches including the Century Ref. 121001 from 1962 with a manual wind Cal. 269 movement and a gold-capped stainless steel caseback.

Case material 1: gold-capped
Case material 2: stainless steel
Dial color 1: beautiful 'Jupiter' patina

Posted at

Jan 28, 2026, 8:27 AM

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Omega Constellation Globemaster Annual Calender 130.33.41.22.06.001 Box & Papers

Omega - 130.33.41.22.06.001 · $6,599

The Omega Constellation Globemaster Annual Calendar features a sunburst grey dial, applied hour markers, and a clean annual calendar display. It is powered by the Co-Axial Master Chronometer Caliber 8922, delivering outstanding precision and resistance to magnetic fields up to 15,000 gauss.

Condition: Great pre-owned condition
Movement: in-house Co-Axial Master Chronometer Caliber 8922
Bracelet material: stainless steel

Posted at

Jan 27, 2026, 11:44 PM

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