Omega Constellation Constellation Co-Axial 38 White Gold / Diamond / Black

Reference 123.55.38.21.51.001

Omega Constellation Co-Axial 38 White Gold / Diamond / Black

About this watch

The Omega Constellation Co-Axial 38 (model 123.55.38.21.51.001) is an epitome of luxury and sophistication, boasting an impeccable design with a white gold case, gem-set bezel, and rich black dial. The watch features a robust automatic movement, the Omega caliber 8501, which boasts precision and innovation, including a Co-Axial escapement that reduces friction and enhances longevity. With a power reserve of approximately 60 hours, this chronometer is reliable and accurate. Its stunning design combines elegance with functionality, making it perfect for everyday wear or formal occasions. The watch displays hours, minutes, seconds, and date, while its Dauphine hands glide smoothly over the dial, providing clear visibility. With a water resistance of up to 100 meters, you can enjoy swimming, snorkeling, or other water activities without worrying about your timepiece. As a statement piece, this Omega Constellation Co-Axial 38 carries with it a legacy of excellence and a promise of reliability, making it a worthy addition to any collection.
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Key Features

  • White gold case
  • Gem-set bezel
  • Automatic movement (Omega caliber 8501)
  • Co-Axial escapement
  • Chronometer accuracy
  • Water resistance up to 100 meters
  • Dauphine hands

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 38 White Gold / Diamond / Black
Reference
123.55.38.21.51.001
Movement
8501
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
White Gold 38mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] 60s Omega Constellation Pie Gold Cap Pan Ref. 168.005 | Dog-leg Lugs | All Original | $2450 (SERVICED)

60s Omega Constellation Pie Gold Cap Pan Ref. 168.005 | Dog-leg Lugs | All Original | $2450 (SERVICED)

Omega - 168.005 · $2,450
This vintage Omega Constellation has a design icon 'Pie Pan' dial with faceted edges and bold applied markers, along with twisted dog-leg lugs and chronometer-rated movement.

  • Condition: Serviced, good condition with some light spotting on the dial
  • Movement Rating: Chronometer-rated
  • Case Condition: Very good condition
  • Diameter: 34mm (diameter)
Posted at
Mar 16, 2026, 9:33 AM
Active
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[WTS] Omega Constellation Pie Pan Ref. 168.005 | Great Condition (Serviced) | $2450

Omega Constellation Pie Pan Ref. 168.005 | Great Condition (Serviced) | $2450

Omega - 168.005 · $2,450
The Omega Constellation Pie Pan 168.005 is one of the most iconic dress watches of the 1960s, featuring a stainless steel 34mm case and a silver sunburst dial with applied hour markers.

  • Condition: great condition
  • Case size: 34mm diameter
  • Dial color: silver sunburst
  • Movement type: chronometer-certified automatic
Posted at
Mar 15, 2026, 1:07 AM
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[WTS] Omega Constellation Day-Date Quartz • c.1980 Movement Rebuilt

Omega Constellation Day-Date Quartz • c.1980 Movement Rebuilt

Omega - Constellation Day-Date Quartz · $999
A classic Omega Constellation from the 1980s with a day-date display and slim quartz profile, featuring a recent quartz movement overhaul.

  • Condition: Set watch only, case in good vintage condition with wear
  • Movement Status: quartz movement recently overhauled and running properly
  • Case Condition: good vintage condition with wear
Posted at
Mar 14, 2026, 12:40 PM
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[WTS] 1962 Omega 18k Solid Gold Constellation 167005 /6 - Cal 551 - Pie Pan - Dog Legs

1962 Omega 18k Solid Gold Constellation 167005 /6 - Cal 551 - Pie Pan - Dog Legs

Omega - 167005/6 · $4,750
This exceptional Omega Constellation features a classic 34mm solid gold case with a stunning gold pie-pan dial and an original calibre 551 movement. The watch has been freshly serviced by our watchmaker and is running reliably.

  • Condition: unpolished, sharp condition retaining factory bevels
  • Case size: 34mm diameter
  • Case material: 18k solid yellow gold
  • Dial condition: original, stunning condition
Posted at
Mar 13, 2026, 7:03 PM
Active
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[WTS] Omega Constellation 33mm 18kYG 166052/168033

Omega Constellation 33mm 18kYG 166052/168033

Omega - 166052/168033 · $4,100
A Omega Constellation watch with a 33mm case size, available for sale.

  • Case Diameter: 33mm
  • Lug To Lug: 39mm
  • Lug Width: 19mm
Posted at
Mar 13, 2026, 2:51 PM
Active
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[WTS] Omega Constellation Pie Pan Steel Ref. 168.005 | Great Dial, Sharp Case | Dog-leg Lugs | All Original | $2400 (SERVICED)

Omega Constellation Pie Pan Steel Ref. 168.005 | Great Dial, Sharp Case | Dog-leg Lugs | All Original | $2400 (SERVICED)

Omega - 168.005 · $2,400
This vintage Omega Constellation has a 'Pie Pan' dial with faceted edges and bold applied markers, making it a design icon of the mid-century era.

  • Condition: Serviced, excellent condition
  • Case Diameter: 34mm
  • Thickness: ~11mm
  • Lug To Lug: 43.5mm
Posted at
Mar 13, 2026, 12:00 PM
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[WTS] Excellent Omega Steel ‘Pie Pan’ Constellation Dog-Legged Lugs Onyx Markers - Ref. 168.005 - Caliber 561 Automatic Date - From 1966 - $2500 Shipped + Duties Covered

Excellent Omega Steel ‘Pie Pan’ Constellation Dog-Legged Lugs Onyx Markers - Ref. 168.005 - Caliber 561 Automatic Date - From 1966 - $2500 Shipped + Duties Covered

Omega - 168.005 · $2,500
This is a classic Omega Constellation 'Pie Pan' in steel with a sunburst dial, running the caliber 561 automatic movement.

  • Condition: Excellent, unpolished and untouched with only light honest marks
  • Movement: Caliber 561 automatic date
  • Case size (excluding crown): 35mm
  • Lug style: Dog-legged lugs
Posted at
Mar 12, 2026, 11:20 AM
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[WTS] Mint Omega Gold-Capped Constellation White Sunburst Dial - Ref. 168.018 - Caliber 564 Chronometer Automatic Date - From 1969 - $2300 Shipped + Duties Covered!

Mint Omega Gold-Capped Constellation White Sunburst Dial - Ref. 168.018 - Caliber 564 Chronometer Automatic Date - From 1969 - $2300 Shipped + Duties Covered!

Omega - 168.018 · $2,300
This Omega Constellation features a gold-capped case design with a sunburst dial and thick hour markers. The watch is in exceptional condition with no flaws, retaining its original brushing and textures.

  • Condition: Mint, new-old-stock
  • Movement: Caliber 564 Chronometer Automatic Date
  • Size: 35mm diameter (excluding the crown)
  • Year: 1969
Posted at
Mar 12, 2026, 11:19 AM
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[WTS] 1971 Omega Constellation ref. 168.0056 w/ Cal. 1011 on original Omega brick bracelet – clean original dial – $1,250 shipped

1971 Omega Constellation ref. 168.0056 w/ Cal. 1011 on original Omega brick bracelet – clean original dial – $1,250 shipped

Omega - 168.0056 · $1,250
A vintage Omega Constellation ref. 168.0056 from 1971, powered by the Cal. 1011 automatic movement and featuring a clean original dial, unpolished C-case, and original Omega brick bracelet.

  • Condition: Pre-owned with minor hairline scratches on the case
  • Movement: Omega Cal. 1011 automatic, chronometer-certified
  • Case size: 35mm without crown
  • Lug width: 19mm
Posted at
Mar 12, 2026, 8:42 AM
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