Omega Constellation Constellation Co-Axial 31 Stainless Steel / Black

Reference 123.10.31.20.01.001

Omega Constellation Co-Axial 31 Stainless Steel / Black

About this watch

The Omega Constellation Co-Axial 31 is a masterpiece of luxury watchmaking, boasting a stunning stainless steel casing and alluring black dial with stick and dot indexes. At the heart lies the Omega caliber 8520 movement, a marvel of engineering with 50-hour power reserve and chronometer certification. The watch's sleek design and robust features make it perfect for any occasion, while its water resistance up to 100 meters ensures you can wear it with confidence. As part of the Constellation family, this timepiece is steeped in heritage and precision, making it an exceptional value in the luxury category. Whether you're a professional or watch enthusiast, this watch is sure to leave a lasting impression.

Buy Now on Jomashop

This is an affiliate link

Key Features

Omega caliber 8520 movement
Chronometer certification
Sapphire glass
Water resistance up to 100 meters
Stainless steel casing
Black dial with stick and dot indexes
Dauphine hands

Specifications

Brand

Omega

Family

Constellation

Model

Constellation Co-Axial 31 Stainless Steel / Black

Reference

123.10.31.20.01.001

Movement

8520

Movement Features

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

Case

Stainless Steel 31mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

100

Current Listings

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

Serviced Vintage Omega Constellation Automatic Chronometer Cal. 564 ( Ref. 168.017 ) $750 Shipped…..OBO

Omega - 168.017 SP · $750

Condition: Very good vintage condition for its age
Movement: Omega Cal. 564 Automatic
Jewels: 24
Chronometer certified: true

Posted at

Feb 14, 2026, 6:33 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