Omega Constellation Constellation Co-Axial 31 Red Gold / MOP

Reference 123.50.31.20.55.001

About this watch

The Omega Constellation Co-Axial 31 Red Gold / MOP is a masterpiece of luxury watchmaking. Its round 31mm case in luxurious red gold exudes warmth and richness, while the iridescent mother-of-pearl dial creates a visual spectacle that's hard to ignore. The Dauphine hands glide smoothly over the dial, ensuring time is both visible and beautifully presented. At its heart lies the Omega Caliber 8521, a self-winding movement designed for precision and reliability. With automatic winding in both directions and a power reserve of 50 hours, this watch is built to withstand daily wear and tear. Certified as a chronometer, it guarantees exceptional accuracy, making it a testament to Omega's commitment to quality and precision.
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Key Features

  • Omega Caliber 8521 self-winding movement
  • Red gold case with mother of pearl dial
  • Fixed bezel with 12-hour markings
  • 100m water resistance
  • Certified chronometer for exceptional accuracy

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 31 Red Gold / MOP
Reference
123.50.31.20.55.001
Movement
8521
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Red Gold 31mm
Dial Color
White
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] 1969 Vintage Omega Constellation Day-Date Linen Dial 35mm Gold Filled Unpolished Automatic on Snakeskin - $1850 SHIPPED

1969 Vintage Omega Constellation Day-Date Linen Dial 35mm Gold Filled Unpolished Automatic on Snakeskin - $1850 SHIPPED

Omega - 168.029 · $1,850
A 1969 Omega Constellation Day-Date with a 35mm gold-filled case and silver linen dial, accompanied by a genuine snakeskin Montbrilliant-Peaux strap.

  • Condition: Good - minor marks on crystal and expected wear on case sides
  • Case size: 35mm diameter
  • Movement: Automatic
  • Straps material: Genuine snakeskin leather
Posted at
Sep 11, 2025, 10:12 PM
Active
[WTS] 1968 Omega Constellation ref. 157.0001 Cal. 712 – Blue textured dial, original mesh bracelet, boxes – $1390 shipped

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Omega - 157.0001 · $1,390
A 1968 Omega Constellation with a blue textured dial, original mesh bracelet, and boxes.

  • Movement: Cal. 712 automatic chronometer
  • Case: Stainless steel, 34.5mm in diameter
  • Lug width: 18mm
Posted at
Sep 11, 2025, 9:56 PM
Active
[WTS] Omega Constellation Globemaster ref 130.33.39.21.03.001

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  • Condition: excellent pre-owned condition
  • Movement: cal 8900 Master Chronometer co-axial
  • Case size: 39mm diameter
Posted at
Sep 8, 2025, 1:38 PM
Active
[WTS] 1960 Omega Constellation Calendar Ref. 2943 - Serviced w/ Extras

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Omega - 2943 · $1,450
This is a rare Omega Constellation Calendar, manufactured in 1960, with a caliber 504 movement. It comes with its original papers and two-tone beads of rice bracelet.

  • Condition: Great condition
  • Bracelet Condition: some issues (no end links, lug hole problem)
  • Movement Condition: astonishing condition
  • Box Condition: only outer top present
Posted at
Sep 6, 2025, 1:03 PM
Active
[WTS] 60s Omega Constellation Chronometer 168.005 | Cal. 564 | Dog Leg lugs, Beads-of-Rice Bracelet, Quickset Date, Onyx Dial | $1560 (SERVICED)

60s Omega Constellation Chronometer 168.005 | Cal. 564 | Dog Leg lugs, Beads-of-Rice Bracelet, Quickset Date, Onyx Dial | $1560 (SERVICED)

Omega - 168.005 · $1,590
A classic 1960s Omega Constellation Chronometer with a clean silver dial and iconic star at 6 o'clock, powered by the accurate Caliber 564 movement.

  • Condition: Excellent vintage condition
  • Movement: Caliber 564 — automatic, 24 jewels, COSC-rated chronometer, quickset date
  • Bracelet: Beads-of-rice bracelet with original links
  • Case dimensions: [object Object]
Posted at
Sep 6, 2025, 9:22 AM
Active
Vintage Omega Constellation Manhattan Automatic with Date [WTT] [WTS]

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A refined and elegant vintage Omega Constellation chronometer-certified automatic wristwatch in stainless steel, featuring an integrated bracelet and slim case profile.

  • Condition: Pre-owned, shows normal wear consistent with age
  • Case material: Stainless steel
  • Bracelet type: Integrated Omega stainless steel
  • Crystal material: Sapphire
Posted at
Sep 5, 2025, 9:37 PM
Active
[WTS] Omega Constellation 167.005

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Omega - 167.005 · $870
The Omega Constellation 167.005 is a 36mm watch featuring the 551 movement, with a nice patina on the dial and an aftermarket bracelet that fits a 6.5in wrist.

  • Condition: Pre-owned with light scratches and wear marks
  • Case size: 36mm
  • Movement type: 551
  • Bracelet type: aftermarket
Posted at
Sep 5, 2025, 11:18 AM
Active
[WTS] Omega Constellation 167.021 Ultra-Thin Cal. 712 Chronometer –  Super Clean, €1000

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Omega - 167.021 · $1,000
A Omega Constellation 167.021 Ultra-Thin Cal. 712 Chronometer in excellent condition.

  • Condition: Super clean
  • Caliber: Cal. 712
Posted at
Sep 4, 2025, 5:34 PM
Active
[WTS] Omega constellation 1422

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Omega - 1422 · $390
A Omega Constellation ref. 1422 is being sold with a worn condition but still keeping great time.

  • Condition: very worn
  • Shipping: continental US
  • Payment Methods: PayPal, cash (meet in person in Edinburg, Texas)
Posted at
Sep 3, 2025, 4:14 PM
Active