Omega Constellation Constellation Co-Axial 31 Yellow Gold / MOP

Reference 123.50.31.20.55.002

About this watch

The Omega Constellation Co-Axial 31 Yellow Gold / MOP (Model: 123.50.31.20.55.002) is a luxurious timepiece that exudes opulence and sophistication. With its stunning Mother of Pearl dial, gem-set indexes, and 18K yellow gold case, this watch is a true masterpiece of craftsmanship. The Omega caliber 8521 movement features a Co-Axial escapement, designed to enhance precision, stability, and durability. This self-winding movement boasts a 50-hour power reserve and is protected by a scratch-resistant sapphire crystal. With its water resistance of up to 100 meters, this watch can keep pace with your active lifestyle. The Constellation's design ensures it sits comfortably on the wrist, making it perfect for both casual and formal settings. Whether you're a seasoned watch collector or looking for a special piece to mark an occasion, this timepiece is sure to impress. Its unique blend of art, technology, and luxury makes it a true standout in the world of watches.

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Key Features

Omega caliber 8521 movement
18K yellow gold case
Mother of Pearl dial
Gem-set indexes
Scratch-resistant sapphire crystal
Water resistance up to 100 meters

Specifications

Brand

Omega

Family

Constellation

Model

Constellation Co-Axial 31 Yellow Gold / MOP

Reference

123.50.31.20.55.002

Movement

8521

Movement Features

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

Case

Yellow Gold 31mm

Dial Color

White

Crystal

Sapphire

Water Resistance

100

Current Listings

2024 Omega Constellation - Full set Box and Papers - Ref# 131.33.41.21.04.001

Omega - 131.33.41.21.04.001 · $4,998

The Omega Constellation is a flagship watch characterized by its half-moons and claws on the side of the case, making it a perfect combination of class and durability. The 41 mm case features a blue ceramic bezel, making it suitable for daily wear.

Condition: very good with light signs of wear on the case
Case size: 41mm diameter
Bezel material: blue ceramic
Band condition: near perfect

Posted at

Apr 26, 2025, 2:59 PM

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Vintage Omega Constellation Automatic - Ultra Thin Movement

Omega - 157.0002 · $999

This is a rare example of the ultra thin automatic Omega Constellation with a clean Genta-inspired design, all original and in exceptional shape.

Condition: Exceptional shape, all original
Case Size: 35mm
Dial Type: Original
Crown Type: Original

Posted at

Apr 26, 2025, 1:49 PM

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Vintage Omega Constellation Chronometer - 168.0056 - C-Shaped Case - $825 Shipped!

Omega - 168.0056 · $825

This vintage Omega Constellation Chronometer features an automatic movement and a C-shaped case measuring approximately 35mm in diameter, with a date window at 3 o'clock.

Condition: good condition with signs of wear, consistent with its age
Case diameter: 35mm
Movement type: automatic

Posted at

Apr 26, 2025, 11:03 AM

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Omega Constellation. PiePan. Automatic.

Omega - Constellation · $1,450

This Omega Constellation features an automatic movement and a Pie Pan dial, with a stainless steel AM strap.

Condition: nice condition
Movement type: automatic
Strap: AM strap

Posted at

Apr 25, 2025, 3:30 PM

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Omega Constellation Co-Axial Chronometer, or, "We have PRX at home"

Omega - 123.10.35.20.01.002 · $1,500

A 35mm Omega Constellation Co-Axial Chronometer with a reverse clous de paris dial, powered by the Caliber 2500 chronometer movement.

Condition: Good, with minor hairline scratches on case and bracelet
Diameter: 35mm
Lug To Lug: 38.4mm
Thickness: 10.8mm

Posted at

Apr 25, 2025, 11:54 AM

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Omega Constellation 18k Onyx Dial

Posted at

Apr 24, 2025, 2:52 PM

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Omega Constellation CALENDAR Ref 2943 Vintage, Automatic, Gold Filled on Bracelet, 34 mm. From 1959, Serviced, New Price Reduction

Omega - 29435 SC · $1,395.001

This Omega Constellation CALENDAR Ref 2943 is a vintage automatic watch made of stainless steel and gold capped, featuring an original cream dial. The movement is Caliber #504, 24 Jewels, In House, and was serviced on April 15, 2022.

Condition: Very good condition with wear from use
Case size diameter: 35 mm
Case thickness: 13.1 mm
Bracelet type: Omega Stainless Steel bracelet Gold Filled 20 Microns with Deployment Buckle

Posted at

Apr 24, 2025, 2:42 AM

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