Omega Constellation Constellation Co-Axial 31 Red Gold / Snow / Diamond Supernova

Reference 123.55.31.20.55.006

About this watch

The Omega Constellation Co-Axial 31 Red Gold / Snow / Diamond Supernova is a masterpiece of luxury watchmaking, blending exquisite design with cutting-edge technology. Its mother of pearl dial shines with an ethereal glow, while the gem-set indexes add a touch of sparkle that catches the eye. The round case, crafted from 18 Ct red gold, exudes luxury and sophistication, making it a statement piece for any occasion. At its core lies the Omega caliber 8421, an automatic movement featuring the Co-Axial escapement, which enhances accuracy and reduces friction, leading to better performance over time. With a power reserve of 50 hours and a frequency of 25,200 vibrations per hour, this watch is built for performance. It's a chronometer, meaning it has been tested and certified for superior precision—a crucial factor for any serious watch enthusiast. The Constellation Co-Axial 31 also boasts an impressive water resistance of up to 100 meters, making it perfect for swimming or engaging in water sports without worrying about damaging it. Whether you're at a gala or a casual brunch, this watch is sure to turn heads.

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Key Features

Omega caliber 8421 automatic movement
Co-Axial escapement for enhanced accuracy and reduced friction
Chronometer tested and certified for superior precision
Up to 100 meters water resistance
31 mm diameter, suitable for smaller and larger wrists
Red gold case with gem-set bezel and mother of pearl dial
Dauphine hands for easy reading of the time

Specifications

Brand

Omega

Family

Constellation

Model

Constellation Co-Axial 31 Red Gold / Snow / Diamond Supernova

Reference

123.55.31.20.55.006

Movement

8421

Movement Features

Hours, Minutes, Seconds
Chronometer, Co-Axial Escapement

Case

Red Gold 31mm

Dial Color

White

Crystal

Sapphire

Water Resistance

100

Current Listings

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A sophisticated timepiece featuring a distinctive stainless steel and yellow gold case with Roman numeral-engraved bezel, grey dial with date window at 3 o'clock, powered by OMEGA's Co-Axial Calibre 2500 movement.

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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Lug to lug: 38mm
Lug width: 23mm

Posted at

Dec 21, 2025, 7:48 PM

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Condition: Excellent condition, with a few scratches on the crystal
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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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Posted at

Dec 21, 2025, 8:20 AM

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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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