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.

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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

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A 1966 Omega Constellation Pie Pan reference number 14902, in good condition with a gold filled bezel and lugs.

Condition: good condition with wear and aging on the dial
Case width: 34mm
Bezel and lugs material: gold filled
Year: 1966

Posted at

May 15, 2026, 2:36 PM

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Condition: Pre-owned, unpolished case with age-related wear, some paint loss on bezels
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Posted at

May 13, 2026, 10:07 PM

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Year: 1952

Posted at

May 13, 2026, 2:31 PM

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Posted at

May 13, 2026, 1:46 PM

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Condition: Serviced movement, great time keeping, flawless dial
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Posted at

May 13, 2026, 12:53 PM

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Condition: like-new
Case size: 39mm
Case thickness: 12.5mm
Water resistance: 100m / 330ft depth rating

Posted at

May 12, 2026, 7:55 PM

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Vintage 1.969 - Omega Constellation Chronometer Automatic ( Silver Linen Dial ) | Ref 153.014

Posted at

May 10, 2026, 11:16 PM

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Condition: Very good
Case Diameter: 33mm
Lug To Lug Length: 35.2mm
Bracelet Size Range: ~6.75"

Posted at

May 10, 2026, 6:23 PM

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