Omega Constellation Constellation Co-Axial 31 Red Gold / Brown

Reference 123.50.31.20.13.001

Omega Constellation Co-Axial 31 Red Gold / Brown

About this watch

The Omega Constellation Co-Axial 31 Red Gold / Brown is a masterpiece of horological excellence, embodying the spirit of Omega with its robust movement, luxurious materials, and timeless design. This luxury watch stands tall in the world of timepieces, offering a unique blend of style, performance, and heritage. With its automatic winding mechanism, 50-hour power reserve, and chronometer certification, this watch ensures exceptional precision and reliability. The red gold case exudes sophistication and elegance, while the brown dial harmonizes beautifully with the case. The Omega caliber 8521 movement is equipped with the Co-Axial Escapement, providing greater precision, stability, and durability. The watch features a date function, water resistance of up to 100 meters, and a sapphire crystal for scratch resistance and clarity.
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Key Features

  • Automatic winding in both directions
  • 50-hour power reserve
  • Chronometer certified for exceptional precision
  • Red gold case with brown dial
  • Omega caliber 8521 movement with Co-Axial Escapement
  • Date function for easy viewing
  • Water resistance up to 100 meters

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 31 Red Gold / Brown
Reference
123.50.31.20.13.001
Movement
8521
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Red Gold 31mm
Dial Color
Brown
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] PACKAGE DEAL! Two Omega Constellation Manhattan Day Dates - Integrated Bracelet Beauties CHEAP!

PACKAGE DEAL! Two Omega Constellation Manhattan Day Dates - Integrated Bracelet Beauties CHEAP!

Omega - Constellation Manhattan Day-Date · $1,795
Two Omega Constellation Manhattan Day-Dates for sale, one in full steel and one in two-tone. Both have 33mm cases with oversized bezels and integrated bracelets.

  • Condition: Pre-owned, unpolished with some age-related wear and patina
  • Case Diameter: 33MM
  • Bracelet Length: [object Object]
  • Movement Type: Swiss quartz with quickset date
Posted at
Apr 13, 2026, 10:05 PM
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[WTS] Omega Constellation Year 2000 Millennium Limited Edition 1504.50

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Omega - 1504.50 · $999
This unique Omega Constellation Year 2000 Millennium Edition was one of 2000 pieces created to commemorate the turn of the millennium.

  • Condition: Good condition with normal signs of wear throughout the case and some scratching on the AR coating
  • Limited Edition Run: 2000
Posted at
Apr 13, 2026, 9:11 PM
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[WTS] 1962 Omega Constellation Pie Pan Ref. 14602 62 SC | Good Vintage Condition | Sunray Silver Dial | All Original | $1900 (SERVICED)

1962 Omega Constellation Pie Pan Ref. 14602 62 SC | Good Vintage Condition | Sunray Silver Dial | All Original | $1900 (SERVICED)

This 1962 Omega Constellation Pie Pan Ref. 14602 62 SC is a masterclass in mid-century elegance, featuring a crisp silver sunray dial and the iconic 'Pie Pan' dial geometry.

Posted at
Apr 13, 2026, 9:37 AM
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[WTS] Automatic Omega Constellation Manhattan and Hand-Winding Pre-WWII Omega

Automatic Omega Constellation Manhattan and Hand-Winding Pre-WWII Omega

Omega - 168.0075 · $1,600
This listing is for two Omega watches: an automatic chronometer and a pre-WWII hand-winding watch, both in working condition but with unknown service history.

  • Condition: pre-owned working condition
  • Service history: unknown
  • Caliber: Cal 1111
Posted at
Apr 12, 2026, 8:06 PM
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[WTS] Omega Constellation Automatic Ref.155.0021 Cal 711 Rare Antique Gold Dial Men's Watch $600

Omega Constellation Automatic Ref.155.0021 Cal 711 Rare Antique Gold Dial Men's Watch $600

Omega - 155.0021 · $600
A rare Omega Constellation Automatic watch from Switzerland, featuring a stainless steel case and gold band.

  • Condition: Preowned with some wear, scratches and marks
  • Case width: 31 mm (without crown)
  • Band material: Stainless steel & Gold
  • Band size: Will fit up to approx 18.5 cm
Posted at
Apr 12, 2026, 4:57 PM
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[WTS] Omega Constellation Co-Axial Master Chronometer – 39mm – Full Set

Omega Constellation Co-Axial Master Chronometer – 39mm – Full Set

Omega - 39mm
Posted at
Apr 12, 2026, 1:01 PM
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[WTS] Rare Vintage Omega Constellation “Manhattan” Chronometer ST 368.1075 – Very Nice Condition

Rare Vintage Omega Constellation “Manhattan” Chronometer ST 368.1075 – Very Nice Condition

Omega - ST 368.1075 · $999
A rare vintage Omega Constellation “Manhattan” chronometer ref. ST 368.1075, a classic example of Omega’s timeless dress-watch design, characterized by its distinctive 'claws' on the side of the case and an integrated bracelet.

  • Condition: Very nice vintage condition, showing light signs of honest wear consistent with age
  • Movement: Automatic self-winding chronometer-certified movement, Omega Caliber 1110.11.40 (based on ETA 2892-2), 42–44 hour power reserve, 21 jewels
  • Diameter: 35mm
  • Thickness: 7.5mm
Posted at
Apr 10, 2026, 4:18 PM
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[WTS] Omega Constellation 568.016 Ladies Automatic Chronometer 18K WG Bezel Cal 682 Full Set

Omega Constellation 568.016 Ladies Automatic Chronometer 18K WG Bezel Cal 682 Full Set

Omega - 568.016 · $1,349
This Omega Constellation Automatic Chronometer features a stainless steel case with an 18K solid white gold bezel, silver sunburst dial, and Observatory medallion caseback.

  • Condition: Near-mint
  • Case size: 25mm
  • Lug to lug length: 30mm
  • Movement frequency: 19,800 bph
Posted at
Apr 10, 2026, 1:43 AM
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[WTS] Omega Constellation 14902 SC-61 — Pie Pan Crosshair — Cal. 561 — $1,999 Shipped (Tariff covered)

Omega Constellation 14902 SC-61 — Pie Pan Crosshair — Cal. 561 — $1,999 Shipped (Tariff covered)

Omega - 14902 SC-61 · $1,999
  • Condition: Pre-owned, serviced
  • Case Size: 34.5mm (excluding crown)
  • Lug To Lug: ~42mm
  • Thickness: ~11mm
Posted at
Apr 9, 2026, 2:55 PM
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