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

Reference 123.20.31.20.13.001

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

About this watch

The Omega Constellation Co-Axial 31 is a stunning blend of sophistication and mechanical excellence, featuring a unique combination of red gold and stainless steel that creates a striking contrast. The rich brown dial adds warmth to any outfit, while the round case (31mm diameter) sits comfortably on the wrist. The sapphire glass ensures scratch resistance, and the open case back showcases Omega's precision engineering. At its heart lies the Omega Caliber 8520, an automatic movement renowned for reliability and performance. This chronometer has undergone rigorous testing to ensure accuracy, with a power reserve of 50 hours and a frequency of 25,200 vibrations per hour. The Co-Axial escapement reduces friction between components, improving accuracy and extending the watch's lifespan. The Omega Constellation Co-Axial 31 provides an elegant display of time and date, with Dauphine hands gliding smoothly across the dial. Its water resistance rating of 100 meters makes it perfect for active lifestyles or spontaneous adventures. The understated elegance allows it to transition seamlessly from day to night, complementing any outfit.

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Key Features

Omega Caliber 8520 Automatic Movement
Chronometer Accuracy and 50-Hour Power Reserve
Sapphire Glass Scratch Resistance
Open Case Back for Precision Engineering
Red Gold and Stainless Steel Combination
31mm Diameter Round Case
Water Resistance up to 100m

Specifications

Brand

Omega

Family

Constellation

Model

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

Reference

123.20.31.20.13.001

Movement

8520

Movement Features

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

Case

31mm

Dial Color

Brown

Crystal

Sapphire

Water Resistance

100

Current Listings

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Condition: Pre-owned, unpolished case with age-related wear, some paint loss on bezels
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Year: 1952

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Condition: Serviced movement, great time keeping, flawless dial
Movement Type: Automatic Chronometer (24 Jewels)
Case Materials: Rose Gold Cap over stainless steel
Dial Type: Original silver sunburst Pie Pan (No Date) with Rose Gold indices and hands

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

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May 10, 2026, 11:16 PM

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Omega Constellation Manhattan ref. 396.1070 - 33mm Quartz, Blue Hands & Logo, Very Clean

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A vintage Omega Constellation Manhattan watch, reference 396.1070, featuring a silvery white dial and blue hands. The 33mm diameter case has a tonneau shape with an integrated bracelet.

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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