Omega Constellation Constellation Co-Axial 31 Stainless Steel / Yellow Gold / Diamond / MOP

Reference 123.25.31.20.55.003

Omega Constellation Co-Axial 31 Stainless Steel / Yellow Gold / Diamond / MOP

About this watch

The Omega Constellation Co-Axial 31 is a masterpiece that beautifully marries form and function. With its luxurious materials, sophisticated design, and reliable movement, it’s a watch that is sure to be cherished for generations. The combination of stainless steel and yellow gold creates a striking contrast that is both modern and classic. The gem-set bezel adds a touch of glamour, making it perfect for formal occasions or everyday wear. The dial is made of exquisite Mother of Pearl, which not only enhances its beauty but also gives it a dynamic quality. Depending on the light, the dial can appear in various colors, ranging from shimmering white to soft pastel hues. Featuring Dauphine hands, the watch ensures excellent readability. At the heart of the Constellation Co-Axial 31 lies the Omega caliber 8520, an automatic movement known for its precision and reliability. The Co-Axial escapement is a significant innovation that reduces friction between the parts, enhancing the watch's longevity and accuracy. With a water resistance of 100 meters, this watch is ideal for daily wear. Whether you’re splashing in the pool or caught in the rain, the Omega Constellation can handle it all.

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Key Features

Omega caliber 8520 automatic movement
Sapphire crystal glass
Water resistance up to 100 meters

Specifications

Brand

Omega

Family

Constellation

Model

Constellation Co-Axial 31 Stainless Steel / Yellow Gold / Diamond / MOP

Reference

123.25.31.20.55.003

Movement

8520

Movement Features

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

Case

31mm

Dial Color

White

Crystal

Sapphire

Water Resistance

100

Current Listings

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

Omega - 14777-61SC · $1,600

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

OMEGA - 168.018 · $1,500

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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10k Gold Filled Omega Constellation. STEAL DEAL

Omega - Constellation · $555

This vintage Omega Constellation is a mid-century design in a classic 34mm case that exudes Swiss elegance.

Case size: 34mm

Posted at

Feb 6, 2026, 10:59 PM

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Omega Double Eagle Constellation | Open Case Back Chronograph | Reference 1819.51.91

Omega - 1819.51.91 · $4,900

This Omega Double Eagle Constellation features an open case back showcasing the movement, with a 41MM case size and powered by Co-Axial calibre 3313.

Condition: Excellent Pre-Owned
Case size: 41MM
Crystal status: replaced
Strap type: OEM rubber strap

Posted at

Feb 6, 2026, 2:50 PM

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Omega Double Eagle Constellation | Open Case Back Chronograph | Reference 1819.51.91

Omega - 1819.51.91

a Omega Double Eagle Constellation watch with an open case back chronograph, details to be specified.

Case back type: Open Case Back

Posted at

Feb 6, 2026, 2:47 PM

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Omega Constellation Pie Pan 168.005 w/bracelet | All original | $2500 shipped (SERVICED)

Omega - 168.005 · $2,500

A classic mid-60s Constellation with an iconic pie-pan dial and stainless steel case, powered by Omega's chronometer-rated Caliber 561.

Condition: All original
Movement caliber: Cal. 561 Automatic
Case material: Stainless Steel
Bracelet type: Original Omega bracelet

Posted at

Feb 6, 2026, 11:22 AM

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[WTS] Mint Omega Gold-Capped Constellation White Sunburst Dial - Ref. 168.018 - Caliber 564 Chronometer Automatic Date - From 1969 - $2300 Shipped, Duties Covered!

Mint Omega Gold-Capped Constellation White Sunburst Dial - Ref. 168.018 - Caliber 564 Chronometer Automatic Date - From 1969 - $2300 Shipped, Duties Covered!

Omega - 168.018 · $2,300

This Omega Constellation features a gold-capped case with a crisp sunburst dial and thick hour markers at the quarters. The watch has a 35mm diameter (excluding the crown) and is powered by an excellent caliber 564 automatic movement with date.

Condition: Mint, likely new-old-stock
Movement caliber: 564 Chronometer Automatic Date
Case dimensions: 35mm diameter excluding crown
Lug type: straight lugs

Posted at

Feb 5, 2026, 1:28 PM

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