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

1968 Omega Constellation ref. 157.0001 Cal. 712 – Blue textured dial, original mesh bracelet, boxes – $13500 shipped

Omega - 157.0001 · $13,500

A 1968 Omega Constellation with a blue textured dial and original mesh bracelet, including its boxes.

Year: 1968

Posted at

Oct 30, 2025, 9:13 PM

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[WTS] 1963 Vintage Omega Constellation Ref. 167.005 | No Date | All Original | Freshly Serviced Chronometer Cal 561 | Sharp Unpolished Dog Leg Lugs | Great Vintage Condition | $1830

1963 Vintage Omega Constellation Ref. 167.005 | No Date | All Original | Freshly Serviced Chronometer Cal 561 | Sharp Unpolished Dog Leg Lugs | Great Vintage Condition | $1830

Posted at

Oct 30, 2025, 8:29 AM

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Omega Constellation Pie Pan Demi Gold Ref. 168.005 | Excellent Original Condition (with original straps and buckle, Omega red box & Serviced) | $2950

Posted at

Oct 27, 2025, 11:34 PM

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Omega Constellation 168.054

Posted at

Oct 27, 2025, 12:37 PM

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Omega Constellation 168.046

Posted at

Oct 27, 2025, 12:31 PM

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1961 Omega Constellation (Original Box / Papers

Omega - 14393 · $1,200

This is a 1961 Omega Constellation reference 14393 with a white dome dial and original outer cardboard box. The watch has a 34mm stainless and 14k gold capped case and is powered by an automatic cal 561 movement.

Condition: Very good, with minor wear
Case Size: 34mm
Movement: Omega automatic cal 561

Posted at

Oct 26, 2025, 11:05 PM

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