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

Reference 123.20.31.20.05.001

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

About this watch

The Omega Constellation Co-Axial 31 is a stunning luxury watch that combines exquisite design with advanced technology. Its stainless steel and red gold case beautifully fuses style and sophistication, while the white mother-of-pearl dial catches the light in such a way that it seems to change color as you move. The Dauphine hands glide smoothly across the dial, providing both precision and style. At the heart of this watch is the remarkable Omega caliber 8520 movement, featuring the Co-Axial escapement, which reduces friction between moving parts and enhances the watch's precision. This certified chronometer has passed rigorous tests to ensure its accuracy and can be trusted to keep ticking even when you take it off for the weekend. With a water resistance of up to 100 meters, this watch is built for life! It's not just a luxury accessory; it’s a versatile companion that seamlessly transitions from a day at the office to a night out on the town. Whether you're a watch enthusiast or someone looking to make a statement, the Omega Constellation Co-Axial 31 fits the bill.

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Key Features

Omega caliber 8520 movement
Stainless steel and red gold case
White mother-of-pearl dial
Co-Axial escapement
Certified chronometer
Water resistance up to 100 meters

Specifications

Brand

Omega

Family

Constellation

Model

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

Reference

123.20.31.20.05.001

Movement

8520

Movement Features

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

Case

31mm

Dial Color

White

Crystal

Sapphire

Water Resistance

100

Current Listings

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Condition: some wear
Case diameter: 35 MM

Posted at

Feb 13, 2026, 11:13 PM

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Omega Constellation 🌌 C shaped Gerald Genta design.

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This is a 1960s Omega Constellation with the C shaped Gerald Genta design. It features a reference number of 168017 and a leather strap.

Condition: Runs good, previously a safe queen
Case size: 35.5mm
Thickness: 19mm

Posted at

Feb 13, 2026, 4:11 PM

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Omega constellation chronometer ref 198.0104 & Omega Polaris Ref 396.1022.

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The seller is listing two vintage Omega watches: a Constellation chronometer quartz (ref 198.0141) and an Omega Polaris (ref 396.1022). Both watches are from the 1980s, feature sapphire crystals, and have strap sizes up to 7.5 inches.

Condition: very close to perfect
Case size: 29mm without crown x 33mm
Movement: Omega Cal: 1431 Quartz
Crystal type: Sapphire Crystal

Posted at

Feb 12, 2026, 8:29 AM

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Omega Constellation Jumbo 14777-61SC 37mm | Good Condition (Serviced) | $1600

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The Omega Constellation Jumbo Ref. 14777-61SC is a vintage watch with a clean, flat dial aesthetic and a modern wrist presence. It features a stainless steel case with beautifully curved lugs and a sharp bezel, and powers Omega's Caliber 561 chronometer-rated automatic movement.

Condition: Good (serviced)
Case diameter: 37mm
Lug width: 19mm
Movement: Caliber 561 (chronometer-rated automatic movement with date complication)

Posted at

Feb 10, 2026, 11:15 PM

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OMEGA Constellations Chronometer Certified 168.018 original bracelet, excellent condition

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This Omega Constellation Chronometer is a certified timepiece featuring an automatic Cal 564 movement and a stainless steel case with a silver dial.

Condition: excellent
Case dimensions: 35 x 40mm, thickness 12mm, 19mm lug width
Movement: Cal 564 Automatic 24 Jewels 19800 beats per hour
Accuracy: +/-5s per day

Posted at

Feb 9, 2026, 10:08 PM

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OMEGA Constellations Chronometer certified 167.021, serviced

OMEGA - 167.021 · $1,300

A rare Omega Constellation Chronometer model 167.021, officially certified and ultra thin, featuring a silver dial and automatic movement.

Condition: Used with normal signs of wear and use
Case dimensions: 33 x 39mm, 8mm thickness, 19mm lug width
Movement type: Cal 712 Automatic, 24 Jewels, 19800 beats per hour
Crystal condition: Acrylic Crystal with no scratches and Omega signed in the center

Posted at

Feb 8, 2026, 8:50 AM

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