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 2-Tone Automatic 🇨🇭

Omega - Constellation Automatic · $1,000

A beautiful Omega Constellation Automatic with a 2-tone stainless steel and gold watch, featuring a matching gold dial. The watch has been timegrapher checked and is running around -17spd.

Condition: Great condition with minor signs of wear
Bracelet size: 7-8 inches
Case dimensions: 35mm diameter, 38mm lug to lug, 23mm lug width, 7mm thickness
Movement accuracy: -17 spd

Posted at

Dec 28, 2025, 9:35 PM

Active

View listing on r/WatchExchange

Omega Globemaster Constellation 130.33.39.21.02.001

Omega - 130.33.39.21.02.001 · $4,250

Up for sale is an Omega Globemaster Constellation in great condition, featuring a stainless steel case and automatic Co-Axial Master Chronometer movement.

Condition: Great condition overall, light wear on stainless steel case
Case size: 39mm diameter
Movement type: automatic Co-Axial Master Chronometer

Posted at

Dec 27, 2025, 11:28 PM

Active

View listing on r/WatchExchange

Excellent Omega Constellation Chronometer 198.0126 Call1333 Mens Watch $500

Omega - 198.0126 · $500

A men's Omega Constellation Chronometer reference 198.0126 made in Switzerland with a quartz cal 1333 movement.

Condition: Preowned, with little wear and marks
Movement: Quartz Cal 1333
Country Of Manufacture: Switzerland
Case Material: Stainless steel

Posted at

Dec 27, 2025, 12:40 PM

Active

View listing on r/WatchExchange

Omega Constellation 196.0071 – Replacement Bracelet – $150 (fixed) Free worldwide shipping

Omega - Constellation 196.0071 · $150

Posted at

Dec 27, 2025, 8:53 AM

Active

View listing on r/WatchExchange

Demi Gold Omega Constellation Pie Pan Ref. 168.005 with Applied Indices | Great Condition (Serviced) | $2600

Omega - 168.005 · $2,600

The Omega Constellation Pie Pan Ref. 168.005 is a quintessential 1960s dress watch that embodies Omega’s pursuit of precision and elegance during the golden age of Swiss watchmaking, featuring a distinctive pie-pan dial and chronometer-certified accuracy.

Condition: Great, serviced
Movement: Omega Caliber 564, automatic, 24 jewels, chronometer certified
Case size: 34.5mm diameter
Lugs: Sculpted dog-leg lugs

Posted at

Dec 25, 2025, 11:14 PM

Active

View listing on r/WatchExchange

Omega Constellation. Globemaster. 39mm. 🔥 Dial.

Omega - 130.30.39.21.03.001 · $4,400

A Omega Constellation Globemaster, a 39mm watch with additional details provided in the listing.

Case Size: 39mm
Box And Papers: yes

Posted at

Dec 24, 2025, 11:19 AM

Active

View listing on r/WatchExchange

OMEGA Constellation - 368.1201 - 2006 - Amazing condition - Lowest price online with price match ⭐️

OMEGA - 368.1201 · $1,595

The Omega Constellation 368.1201 is an automatic stainless steel watch with a white linen dial, featuring a 35.5mm diameter and 10mm thickness. It has a 3ATM water resistance rating and comes with a nice integrated bracelet.

Condition: Excellent
Diameter: 35.5mm
Thickness: 10mm
Water Resistance: 3ATM

Posted at

Dec 23, 2025, 10:28 AM

Active

View listing on r/WatchExchange

OMEGA Constellation Ref. 123.20.35.20.06.001 Yellow Gold Two-Tone - COMPLETE SET!

OMEGA - 123.20.35.20.06.001 · $3,250

A sophisticated timepiece featuring a distinctive stainless steel and yellow gold case with Roman numeral-engraved bezel, grey dial with date window at 3 o'clock, powered by OMEGA's Co-Axial Calibre 2500 movement.

Condition: VERY GOOD (some light scratches on bracelet)
Case materials: stainless steel and yellow gold
Bracelet size adjustment: ~7" wrist
Contents included: box, papers, serial hang tag, spare links

Posted at

Dec 22, 2025, 9:02 AM

Active

View listing on r/WatchExchange

Omega Constellation C Shape - 168.017 Circa 1969 only for 775$ Shipped 🚢

Omega - 168.017 · $775

A stainless steel Omega Constellation C Shape from 1969 featuring a 35mm case, an off white dial, and automatic movement calibre 564. The watch has no major dents or scratches and keeps accurate time.

Condition: Great, with a few hairline scratches
Case Size: 35mm diameter
Dial Color: off white

Posted at

Dec 22, 2025, 7:54 AM

Active

View listing on r/WatchExchange