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

Reference 123.25.31.20.55.002

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

About this watch

The Omega Constellation Co-Axial 31 is a stunning luxury watch that embodies elegance and sophistication. This exquisite timepiece boasts a round case crafted from a luxurious blend of stainless steel and yellow gold, featuring a delicate mother-of-pearl (MOP) dial adorned with diamond indexes. The heart of the Omega Constellation is the Omega caliber 8520, an automatic movement certified for its precision and durability. With a water resistance of 100 meters, this watch can handle everyday practicality and special occasion elegance alike. Its versatility makes it perfect for collectors looking for something unique and stunning, as well as anyone wanting to make a statement with their wristwear. The Omega Constellation Co-Axial 31 is more than just a watch; it’s a statement of artistry and precision. This timepiece has everything a luxury watch enthusiast could desire, from its stunning design to its reliable movement.

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Key Features

Omega caliber 8520 automatic movement
Delicate mother-of-pearl (MOP) dial with diamond indexes
Luxurious stainless steel and yellow gold case
Water resistance of 100 meters
Co-Axial escapement for durability and accuracy
Chronometer certified for precision
50-hour power reserve

Specifications

Brand

Omega

Family

Constellation

Model

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

Reference

123.25.31.20.55.002

Movement

8520

Movement Features

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

Case

31mm

Dial Color

White

Crystal

Sapphire

Water Resistance

100

Current Listings

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This beautiful Omega Constellation Automatic is a 2-tone stainless steel and gold watch with a matching gold dial. It has a stainless steel bracelet that can fit wrists up to 8 inches in diameter.

Condition: Great condition with minor signs of wear
Case diameter: 35mm (without crown)
Lug to lug: 38mm
Lug width: 23mm

Posted at

Dec 14, 2025, 9:08 PM

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Omega Constellation 168.017 (1966)

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Condition: Good condition overall
Movement: Cal. 561
Bracelet: Genuine Omega 518 brick bracelet

Posted at

Dec 12, 2025, 10:03 AM

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REDUCED Omega Constellation Gold Cap ( REF:168.018 ) $750 Shipped.....

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A beautiful example of the classic Omega Constellation Automatic Chronometer from the late 1960s. It features an original silver sunburst dial with applied gold markers and date at 3 o'clock, a gold-capped stainless steel case (34mm), and an iconic Observatory medallion on the caseback.

Condition: Excellent condition, freshly serviced
Case size: 34mm diameter
Movement: Caliber 561
Crystal: Acrylic crystal

Posted at

Dec 12, 2025, 8:28 AM

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Condition: VERY GOOD, with some light scratches on bracelet
Case material: stainless steel and yellow gold
Bracelet size: ~7" wrist

Posted at

Dec 12, 2025, 1:09 AM

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1971 Omega Constellation C-Case ref. 168.0056, gold-capped chronometer cal. 1011 – serviced Oct 2025 – $975 shipped

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A 1971 Omega Constellation C-Case chronometer with a gold-capped stainless steel case, solid gold bezel, and warm champagne dial.

Condition: Excellent condition with normal wear from honest use
Caliber: Omega cal. 1011
Movement Service Date: Oct 2025
Case Dimensions: 40mm diameter

Posted at

Dec 11, 2025, 4:07 PM

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[WTS] Omega Constellation super nice condition, complete bracelet. Cal. 751 ref. 168.045. Complete bracelet. Shipping from El Salvador, price inculdes shipping, custom fees. No trades. $1200 - find me on IG as Boldervintage.

Omega Constellation super nice condition, complete bracelet. Cal. 751 ref. 168.045. Complete bracelet. Shipping from El Salvador, price inculdes shipping, custom fees. No trades. $1200 - find me on IG as Boldervintage.

Omega - 168.045 · $1,200

This Omega Constellation is complete with its original bracelet, offering a stylish and premium accessory for any watch enthusiast.

Condition: super nice condition
Shipping Included: true
Custom Fees Included: true

Posted at

Dec 11, 2025, 12:39 PM

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Posted at

Dec 11, 2025, 3:52 AM

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Omega Constellation 18K Rose Gold Silver Pie Pan Dial 1960

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Material: 18K rose gold
Production Year: 1960s

Posted at

Dec 10, 2025, 11:25 AM

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1960's Omega Constellation Ref. CD 168.017 14k gold capped automatic chronometer

Omega - CD 168.017 · $900

A 1966 Omega Constellation Ref. CD 168.017 features a 14k yellow gold capped stainless steel case and a fantastic dial with a few small scratches on the crystal.

Condition: Good used condition
Year: 1966
Case material: 14k yellow gold capped stainless steel

Posted at

Dec 10, 2025, 12:00 AM

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View listing on r/WatchExchange