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

Reference 123.20.31.20.55.002

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

About this watch

The Omega Constellation Co-Axial 31 is a masterpiece of horology, blending luxury, precision, and history. This stunning timepiece boasts an exquisite design featuring stainless steel and yellow gold, complemented by a captivating Mother of Pearl (MOP) dial that shimmers like the ocean. Underneath lies the renowned Omega caliber 8520 automatic movement, a marvel of engineering with a power reserve of 50 hours and Co-Axial escapement, reducing friction for enhanced longevity and precision. With its water resistance of 100 meters and sapphire glass protection, this watch is perfect for daily wear. The comfortable design and adjustable links ensure a secure fit, while the gem-set indexes add an opulent touch. As a true investment piece, the Omega Constellation Co-Axial 31 combines timeless aesthetics with cutting-edge technology, making it an ideal choice for watch collectors, individuals seeking precision and reliability, and fashion enthusiasts alike.

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Key Features

Omega Caliber 8520 Automatic Movement
Co-Axial Escapement with Reduced Friction
Water Resistance of 100 Meters
Sapphire Glass Protection
Mother of Pearl (MOP) Dial
Stainless Steel and Yellow Gold Construction
Gem-Set Indexes for Opulent Touch

Specifications

Brand

Omega

Family

Constellation

Model

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

Reference

123.20.31.20.55.002

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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Caseback Condition: Polished by previous owner

Posted at

Dec 18, 2025, 8:42 PM

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Posted at

Dec 18, 2025, 1:07 PM

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Condition: Beautiful condition with strong, well-defined edges and an exceptionally clean period-correct pie-pan silver dial.
Case Size: 34mm
Year: 1960s
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Posted at

Dec 17, 2025, 5:47 PM

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Posted at

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

Posted at

Dec 14, 2025, 9:08 PM

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Omega Constellation 168.017 (1966)

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This Omega Constellation features a beautiful original 'C-Shape' dial and is accompanied by its genuine Omega 518 brick bracelet.

Condition: Good condition overall
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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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Condition: Excellent condition, freshly serviced
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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
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Posted at

Dec 12, 2025, 1:09 AM

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