Omega Constellation Constellation Co-Axial 31 Stainless Steel / Red Gold / MOP

Reference 123.20.31.20.55.001

Omega Constellation Co-Axial 31 Stainless Steel / Red Gold / MOP

About this watch

The Omega Constellation Co-Axial 31 is a masterpiece of luxury watchmaking, blending classic elements with contemporary flair. This stunning timepiece features a 31.00 mm round case crafted from the finest materials, ensuring durability while maintaining an air of elegance. The mother of pearl (MOP) dial is a standout feature, reflecting light beautifully and giving the watch a unique character that changes with the angle of view. The elegant dauphine hands glide effortlessly across the dial, adding a touch of grace to the overall aesthetic. At its heart lies the Omega caliber 8520, an automatic movement certified by the Swiss Official Chronometer Testing Institute (COSC) for precision and performance. With a power reserve of 50 hours, this watch is built to last, ensuring you can trust the time displayed on your wrist. The Co-Axial escapement minimizes friction between components, resulting in enhanced longevity and improved timekeeping accuracy. Whether you're dressing up for a formal event or looking for a stylish accessory for everyday wear, this watch elevates your look with its blend of sophistication and elegance.

Buy Now on Jomashop

This is an affiliate link

Key Features

Omega caliber 8520 automatic movement
Mother of pearl (MOP) dial with gem-set indexes
Red Gold and Stainless Steel case
100 meters water resistance
Chronometer certification by COSC
Co-Axial escapement for improved accuracy

Specifications

Brand

Omega

Family

Constellation

Model

Constellation Co-Axial 31 Stainless Steel / Red Gold / MOP

Reference

123.20.31.20.55.001

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 41mm – Ref. 131.33.41.21.01.001

Omega - 131.33.41.21.01.001 · $4,900

For sale is a 2019 Omega Constellation Co-Axial Master Chronometer 41mm, featuring a stainless steel case, black ceramic bezel with Roman numerals, and a black dial, powered by Omega’s Caliber 8900 automatic movement. The watch comes on the original black leather strap with stainless steel fold-over clasp.

Condition: Excellent
Case size: 41mm
Material: stainless steel
Bezel material: black ceramic

Posted at

Oct 24, 2025, 9:15 PM

Active

View listing on r/WatchExchange

2024 Omega Constellation Globemaster Master Chronometer Annual Calendar 130.53.41.22.03.001 — Like New, Box & Papers

Omega - 130.53.41.22.03.001 · $14,500

The Omega Constellation Globemaster Master Chronometer Annual Calendar is a sophisticated timepiece that exemplifies precision and elegance. Its 41mm Sedna™ gold case frames a sun-brushed blue dial with a distinctive pie-pan design and month indicators along the perimeter, offering both style and functionality.

Condition: Like new
Case size: 41mm diameter
Thickness: 14.7mm
Lug to lug: 50.1mm

Posted at

Oct 22, 2025, 9:39 AM

Active

View listing on r/WatchExchange

Omega Constellation C-Case 168.0056 Rare Navy Blue Dial – $999 OBO

Omega - Constellation C-Case 168.0056 · $999

Diameter: 37mm

Posted at

Oct 22, 2025, 12:22 AM

Active

View listing on r/WatchExchange

1973 Omega Constellation ref. 168.0056 – Gold-Capped Case w/ Solid Gold Bezel & Medallion – Cal. 1011 Chronometer – Serviced July 2025 – $950 ALL-IN

Omega - 168.0056 · $950

a 1973 Omega Constellation ref. 168.0056 with a gold-capped case, solid gold bezel, and medallion, featuring Cal. 1011 chronometer movement.

Case material: gold
Bezel material: solid gold
Movement: Cal. 1011 Chronometer

Posted at

Oct 21, 2025, 10:22 PM

Active

View listing on r/WatchExchange

Omega Constellation Crosshair Dial 14381-11 SC | Great Original Condition (Serviced) | $1950

The Omega Constellation Ref. 14381-11 SC is a fine example from one of Omega’s most respected design periods, produced around 1959 to 1961.

Posted at

Oct 20, 2025, 10:18 PM

Active

View listing on r/WatchExchange

Omega Constellation. Globemaster. 39mm. ++ Cards and Links. 🔥

Omega - 130.30.39.21.03.001 · $4,350

This listing is for an Omega Constellation Globemaster in a 39mm case, with additional photos and links to purchase available.

Shipping: Fedex with insurance
Shipping Location: NJ USA
International Shipping: yes

Posted at

Oct 17, 2025, 5:20 PM

Active

View listing on r/WatchExchange

Omega Constellation 168.046

Omega - 168.046 · $850

A vintage automatic chronometer, powered by the Omega Caliber 1001 and featuring the iconic Constellation Observatory medallion on the caseback.

Condition: Great used condition, shows light scratches consistent with its age
Case Size: 36mm

Posted at

Oct 16, 2025, 9:27 AM

Active

View listing on r/WatchExchange

Omega Constellation 168.0054

Omega - 168.0054 · $850

A vintage automatic chronometer from the early 1970s with a Day/Date Caliber 1021 and Geneva Observatory medallion on the caseback.

Condition: Great used condition with light scratches
Case shape: C-Shape design
Material: stainless steel

Posted at

Oct 16, 2025, 9:25 AM

Active

View listing on r/WatchExchange

Omega Constellation Globemaster Master Chronometer

Omega - 130.30.39.21.03.001 · $4,650

The Omega Constellation Globemaster 39mm is a versatile dress watch with a dark blue pie pan dial and fluted tungsten carbide bezel. It has goldilocks proportions and a beautiful 3-row bracelet.

Condition: 98% pristine, minor hairline marks on lugs and possibly a faint desk diving mark on case or bracelet
Case dimensions: 39mm x 46.7mm lug to lug x 12.6mm thick
Bracelet type: 3-row with slightly curved central links

Posted at

Mar 31, 2025, 10:32 AM

Active

View listing on RolexForums