Omega Constellation Constellation Co-Axial 31 Yellow Gold / Champagne

Reference 123.50.31.20.08.001

About this watch

The Omega Constellation Co-Axial 31 Yellow Gold / Champagne is a luxurious timepiece that combines elegance, precision, and history. Its stunning aesthetics and high-performance mechanics make it a statement piece. The watch features a yellow gold casing, champagne-colored dial, and Dauphine hands, protected by scratch-resistant sapphire glass. At its core lies the Omega caliber 8521, a marvel of modern engineering with a Co-Axial escapement design that enhances precision and stability. This self-winding movement is equipped with a free-sprung balance system and silicon balance-spring, ensuring durability and reliability. With a power reserve of 50 hours and chronometer certification, this watch meets stringent precision standards, keeping time accurately. Its water resistance rating of 100 meters makes it suitable for daily wear, from casual outings to formal events. This Omega model stands out in the luxury segment with its unique Co-Axial escapement and timeless design.

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Key Features

Yellow gold casing
Champagne-colored dial
Dauphine hands
Scratch-resistant sapphire glass
Omega caliber 8521 movement
Co-Axial escapement design
Free-sprung balance system
Silicon balance-spring

Specifications

Brand

Omega

Family

Constellation

Model

Constellation Co-Axial 31 Yellow Gold / Champagne

Reference

123.50.31.20.08.001

Movement

8521

Movement Features

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

Case

Yellow Gold 31mm

Crystal

Sapphire

Water Resistance

100

Current Listings

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Condition: Great, serviced
Movement: Omega Caliber 564, automatic, 24 jewels, chronometer certified
Case size: 34.5mm diameter
Lugs: Sculpted dog-leg lugs

Posted at

Dec 25, 2025, 11:14 PM

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Case Size: 39mm
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Dec 24, 2025, 11:19 AM

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Condition: Excellent
Diameter: 35.5mm
Thickness: 10mm
Water Resistance: 3ATM

Posted at

Dec 23, 2025, 10:28 AM

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Condition: VERY GOOD (some light scratches on bracelet)
Case materials: stainless steel and yellow gold
Bracelet size adjustment: ~7" wrist
Contents included: box, papers, serial hang tag, spare links

Posted at

Dec 22, 2025, 9:02 AM

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A stainless steel Omega Constellation C Shape from 1969 featuring a 35mm case, an off white dial, and automatic movement calibre 564. The watch has no major dents or scratches and keeps accurate time.

Condition: Great, with a few hairline scratches
Case Size: 35mm diameter
Dial Color: off white

Posted at

Dec 22, 2025, 7:54 AM

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Omega - Constellation Automatic · $1,000

This Omega Constellation Automatic features a 2-tone stainless steel and gold case, matching gold dial, and an original stainless steel bracelet. It's available in great condition.

Condition: Great, minor signs of wear
Case size without crown: 35mm
Lug to lug: 38mm
Lug width: 23mm

Posted at

Dec 21, 2025, 7:48 PM

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1971 Omega Constellation Chronometer C-Case ref. 168.0056 w/ Cal. 1011 – serviced Dec 2025 – full original bracelet – $1150 ALL IN shipped

Omega - 168.0056 · $1,150

A vintage 1971 Omega Constellation Chronometer in the classic C-Case with a clean dial and full original bracelet.

Condition: Excellent condition, with a few scratches on the crystal
Calibre: Cal. 1011 (automatic)
Case Size: 35mm (excluding crown)
Lug Width: 19mm

Posted at

Dec 21, 2025, 9:26 AM

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Condition: Excellent condition, with light wear, scratches and marks
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Movement type: Chronometer

Posted at

Dec 21, 2025, 8:20 AM

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Omega constellation 🌌 Gerald Genta

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This Omega Constellation is a vintage watch featuring a 1960s cal 631 movement, accompanied by a rose gold movement. It has a case diameter of approximately 35-36mm.

Crown size: 35-36mm
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Case material: rose gold

Posted at

Dec 20, 2025, 5:53 PM

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