Omega Constellation Constellation Co-Axial 31 Stainless Steel / MOP

Reference 123.10.31.20.05.001

About this watch

The Omega Constellation Co-Axial 31 Stainless Steel / MOP is a masterpiece of luxury watchmaking, boasting a stunning round shape with a diameter of 31 mm. The polished stainless steel case radiates sophistication, while the mesmerizing mother of pearl dial shifts colors depending on the light. This certified chronometer features an automatic movement (Omega caliber 8520) with a frequency of 25,200 vibrations per hour and a power reserve of up to 50 hours. With its versatility, exceptional design, and reliable movement, this timepiece is perfect for dressing up or casual wear. Its robust water resistance of 100 meters ensures it can withstand splashes of water or a day at the beach. As an investment in quality, craftsmanship, and timeless design, the Omega Constellation Co-Axial 31 is a worthy luxury watch that will stand the test of time.

Buy Now on Jomashop

This is an affiliate link

MSRP: $6,300

Market Price: $2,253

Key Features

Automatic movement (Omega caliber 8520)
Polished stainless steel case
Mesmerizing mother of pearl dial
Certified chronometer
Water resistance of 100 meters
Power reserve up to 50 hours
Robust and durable design

Specifications

Brand

Omega

Family

Constellation

Model

Constellation Co-Axial 31 Stainless Steel / MOP

Reference

123.10.31.20.05.001

Movement

8520

Movement Features

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

Case

Stainless Steel 31mm

Dial Color

White

Crystal

Sapphire

Water Resistance

100

Current Listings

Omega Constellation Globemaster Silver Dial - Full Kit

Omega - Constellation Globemaster · $5,500

Up for sale is my Omega Constellation Globemaster in stainless steel with the silver “pie-pan” dial, featuring a 39mm case size, Omega Caliber 8900 movement and METAS Master Chronometer certification.

Condition: normal wear for its age
Case Size: 39 mm
Case Material: stainless steel
Dial Color: silver

Posted at

Feb 15, 2026, 6:13 PM

Active

View listing on r/WatchExchange

Vintage Omega Constellation unpolished Ref. 168.029 Day-Date $815 shipped

Omega - 168.029 · $815

This is a late 1960s–early 1970s Omega Constellation with a Gerald Genta design. It features an unpolished case and solid 18k white gold fluted bezel.

Condition: Pre-owned, serviced
Material: 18k white gold
Bracelet type: 1040 'brick' bracelet

Posted at

Feb 14, 2026, 9:07 PM

Active

View listing on r/WatchExchange

Omega Constellation Gold Capped (Automatic)

Omega - Constellation Gold Capped (Automatic) · $900

This Omega Constellation features a rare red seconds hand and was serviced last year.

Condition: some wear
Case diameter: 35 MM

Posted at

Feb 13, 2026, 11:13 PM

Active

View listing on r/WatchExchange

Omega constellation chronometer ref 198.0104 & Omega Polaris Ref 396.1022.

Omega · $700

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

Active

View listing on r/WatchExchange

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

Active

View listing on r/WatchExchange

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

Active

View listing on r/WatchExchange

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

Active

View listing on r/WatchExchange