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

Reference 123.20.31.20.55.004

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

About this watch

The Omega Constellation Co-Axial 31 is an exquisite timepiece that embodies the luxurious spirit of Omega while delivering impressive performance. This stunning watch features a round case made from stainless steel adorned with yellow gold claws, a fixed bezel adding modernity to classic elegance. The Mother of Pearl (MOP) dial shimmers and changes color with light, making it a piece of art on your wrist. Coupled with gem-set indexes, this watch is designed to catch eyes and spark conversations. With its automatic movement, 50-hour power reserve, chronometer certification, and Co-Axial escapement, this watch offers remarkable accuracy and longevity. The bracelet feels luxurious against the skin while being sturdy enough for everyday wear. It's adjustable, ensuring a snug fit for various wrist sizes. This watch is perfect for anyone who appreciates the finer things in life.
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Key Features

  • Omega caliber 8520 automatic movement
  • Chronometer certified Co-Axial escapement
  • Stainless steel and yellow gold case
  • Mother of Pearl (MOP) dial
  • Gem-set indexes
  • Water resistance up to 100 meters
  • Adjustable stainless steel and yellow gold bracelet

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 31 Stainless Steel / Yellow Gold Claws / MOP
Reference
123.20.31.20.55.004
Movement
8520
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
31mm
Dial Color
White
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] 1966 Omega Constellation ref. 168.005 w/ Cal. 561 Serviced – crosshair dome dial – $1450 all-in

1966 Omega Constellation ref. 168.005 w/ Cal. 561 Serviced – crosshair dome dial – $1450 all-in

Omega - 168.005 · $1,450
This is a 1966 Omega Constellation ref. 168.005, featuring an original silver crosshair domed dial and Cal. 561 automatic chronometer movement.

  • Condition: Pre-owned with minor signs of aging
  • Case Size: 34.5mm diameter
  • Crystal Type: Plexiglass
  • Crown Period Correct: No
Posted at
Apr 20, 2026, 9:28 AM
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[WTS] *Rare* Vintage 1960s 168.005 Rose Gold Date Omega Constellation with Vertical Brushed dial- Serviced

*Rare* Vintage 1960s 168.005 Rose Gold Date Omega Constellation with Vertical Brushed dial- Serviced

Omega - 168.005 · $1,200
This vintage Omega Constellation Date features a vertical brushed dial and the Omega 561 Caliber movement, which has been serviced.

  • Condition: good condition
  • Movement caliber: Omega 561
  • Dial finish: vertical brushed
  • Case dimensions: [object Object]
Posted at
Apr 19, 2026, 6:20 PM
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[WTS] Vintage 1960s 168.005 Date Yellow Gold Omega Constellation- Serviced $950

Vintage 1960s 168.005 Date Yellow Gold Omega Constellation- Serviced $950

Omega - 168.005 · $950
  • Condition: Good, some minor cosmetic damage
  • Movement caliber: Omega 565
  • Dial condition: Very good for its age
  • Case dimensions: [object Object]
Posted at
Apr 19, 2026, 6:15 PM
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[WTS] OMEGA Constellations Chronometer certified 167.021, serviced

OMEGA Constellations Chronometer certified 167.021, serviced

OMEGA - 167.021 · $1,300
This is a rare Omega Constellation Chronometer certified model, featuring an ultra-thin design and small size but good wrist presence.

  • Condition: Excellent, with normal signs of wear and used
  • Movement: Cal 712 Automatic 24 Jewels, 19800 beats per hour
  • Dial: Original silver dial and handset
  • Crystal: Acrylic Crystal free from scratches, signed in the center by Omega
Posted at
Apr 19, 2026, 10:26 AM
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[WTS] 1967 Omega Constellation Pie Pan Cal. 564 Ref. 168.005 | Great Condition (Serviced) | $2600

1967 Omega Constellation Pie Pan Cal. 564 Ref. 168.005 | Great Condition (Serviced) | $2600

Omega - 168.005 · $2,600
The Omega Constellation Pie Pan Ref. 168.005 is a quintessential 1960s dress watch that embodies Omega’s pursuit of precision and elegance during the golden age of Swiss watchmaking.

  • Condition: Great serviced condition
  • Case size: 34mm
  • Movement: Omega Calibre 564
  • Jewels: 24
Posted at
Apr 18, 2026, 11:13 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, a classic example of Omega’s timeless dress-watch design, first introduced in the mid-1980s.

  • Condition: Very nice vintage condition, showing light signs of honest wear
  • Movement: Automatic self-winding chronometer-certified movement, typically the Omega Caliber 1110.11.40 (based on the ETA 2892-2)
  • Diameter: 35mm diameter stainless steel case
  • Bezel: Yellow gold bezel
Posted at
Apr 18, 2026, 9:13 PM
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[WTS] Omega Constellation Pie span Gold Cap 168.005 Great Condition All Original $2400

Omega Constellation Pie span Gold Cap 168.005 Great Condition All Original $2400

Omega - 168.005 · $2,400
A classic early-60s Omega Constellation with an iconic pie-pan dial and clean case, perfectly representing Omega's chronometer design language at its peak.

  • Condition: Great Condition
  • Case material: Gold Cap
  • Movement: Cal. 564 quickset Automatic
Posted at
Apr 18, 2026, 1:45 PM
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[WTS] Omega Constellation 168.005 Pie Pan Dog Leg Lugs — Cal. 564 Quickset — Unpolished — $2,500 Shipped (Tariff Covered)

Omega Constellation 168.005 Pie Pan Dog Leg Lugs — Cal. 564 Quickset — Unpolished — $2,500 Shipped (Tariff Covered)

Omega - 168.005 · $2,500
A classic Omega Constellation ref. 168.005 featuring the iconic Pie Pan dial and sharp dog leg lugs, powered by the chronometer-rated Cal. 564 with quickset date.

  • Condition: Unpolished, all original
  • Production period: late Pie Pan production period (1969-1970)
  • Serial number range: high 28,xxx,xxx
  • Dial condition: excellent original dial
Posted at
Apr 18, 2026, 1:21 PM
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[WTS] Omega Constellation 168.0057 — 14K Gold Bezel, Day-Date, Cal.1021 Fresh Service — $1300 Shipped (Tariff Covered)

Omega Constellation 168.0057 — 14K Gold Bezel, Day-Date, Cal.1021 Fresh Service — $1300 Shipped (Tariff Covered)

Omega - 168.0057 · $1,300
The Omega Constellation ref. 168.0057 features a clean flat dial with applied indices and day-date complication. The case construction includes a solid 14K gold bezel with 14K gold capped case and stainless steel caseback.

  • Condition: Honest vintage with visible wear, but dial remains clean and sharp printing
  • Movement: Cal.1021 automatic movement
  • Case dimensions: 35mm x 40mm x 10mm, 19mm lug width
  • Strap: Brand new handmade Epsom leather strap (19/16)
Posted at
Apr 17, 2026, 1:40 PM
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