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

Reference 123.55.38.21.51.001

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.
Buy Now on Jomashop
This is an affiliate link

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] Rare 1956 Omega Constellation in Rose Gold / SS

Rare 1956 Omega Constellation in Rose Gold / SS

This is an older Omega Constellation model from 1956, featuring one of the first automatic 5xx series movements. The watch has a smooth winding mechanism and looks great in natural light.

  • Condition: Pre-owned with a scratch on the dial between 1 and 2
  • Movement series: 5xx series (automatic)
  • Case diameter: 34mm
Posted at
May 4, 2025, 7:23 PM
Active
[WTS] FULL COLLECTION SALE PT 2: Tiffany Eastwest (now discontinued), Hamilton Intramatic Chronograph 40mm, Baltic Aquascaphe GMT, Longines Legend Diver 36mm Red Dial, Omega Constellation 35mm

FULL COLLECTION SALE PT 2: Tiffany Eastwest (now discontinued), Hamilton Intramatic Chronograph 40mm, Baltic Aquascaphe GMT, Longines Legend Diver 36mm Red Dial, Omega Constellation 35mm

The seller is listing a collection of five watches for sale, including a Hamilton Intramatic Chronograph, Baltic Aquascaphe GMT, Longines Legend Diver 36mm Red Dial, Omega Constellation 35mm, and Tiffany Eastwest.

  • Condition: pristine
  • Movement: Soprod C125 GMT
  • Case size: 40/20mm
  • Crystal: domed sapphire
Posted at
May 4, 2025, 5:18 PM
Active
[WTS] Omega Constellation. PiePan. Gorgeous Dial.

Omega Constellation. PiePan. Gorgeous Dial.

Omega · $1,375
This Omega Constellation features a Pie Pan dial and is an automatic watch. It comes with an AM strap.

  • Condition: nice condition
  • Case size: 40mm diameter
  • Strap material: AM strap
Posted at
May 4, 2025, 3:12 PM
Active
[WTS] Omega Constellation Co-Axial Chronometer, or, "We have PRX at home"

Omega Constellation Co-Axial Chronometer, or, "We have PRX at home"

The Omega Constellation Co-Axial Chronometer features a 35mm case size, Caliber 2500 chronometer movement, and a reverse clous de paris dial.

  • Condition: Good (with some hairline scratches)
  • Case dimensions: 35mm diameter, 38.4mm lug-to-lug, 10.8mm thickness
  • Bracelet size: adjustable to fit a 6.75 inch wrist
  • Movement type: Caliber 2500 chronometer, Co-Axial movement
Posted at
May 4, 2025, 11:47 AM
Active
[WTS] Rare 1959 Omega Constellation w/ Railtrack Dial, Steel Case & Special Chronometer Movement

Rare 1959 Omega Constellation w/ Railtrack Dial, Steel Case & Special Chronometer Movement

Omega - 14381 · $800
A rare 1959 Omega Constellation with a railtrack dial and special chronometer movement. The watch has an original non-refinished silver dial with patina and an original stainless steel case with wear.

  • Condition: Pre-owned, needs service
  • Case size: 34.5mm
  • Diameter: 34.5mm
  • Movement accuracy: Special chronometer certified with high accuracy
Posted at
Apr 30, 2025, 11:28 AM
Active
1970s Omega Constellation Ref: 391.0801 Quartz with Box

1970s Omega Constellation Ref: 391.0801 Quartz with Box

Omega - 391.0801 · $1,150.001
A 1970s Omega Constellation Ref: 391.0801 Quartz watch in excellent condition, featuring a 32mm stainless steel case and original horizontal grained silver dial.

  • Condition: Excellent with very light wear from use
  • Case Size: 32mm
  • Bracelet Links: 23
  • Movement Type: Quartz
Posted at
Apr 29, 2025, 5:49 PM
Active
2000s Omega Constellation Ref: 1502.30 Automatic

2000s Omega Constellation Ref: 1502.30 Automatic

Omega - 1502.30 · $850.009
This is a 2000s Omega Constellation Ref: 1502.30 Automatic watch, featuring a 34mm Stainless Steel case and an excellent original silver/white dial.

  • Condition: Very nice with some wear from use
  • Case Size: 34mm diameter
  • Bracelet Links: 21 links (+1 extra)
  • Bezel Type: fixed Stainless Steel bezel with recessed Roman Numerals
Posted at
Apr 29, 2025, 5:48 PM
Active
[WTS] VintageOmega Constellation Diamond SS/18kt YG

VintageOmega Constellation Diamond SS/18kt YG

Omega - Constellation · $2,500
This vintage Constellation features a diamond bezel and dial, with a quartz movement running properly. The watch has a 33.5mm case and fits a 7.5 inch wrist.

  • Condition: Good, with some minor flaws (dust under crystal/dial, missing end pieces on links)
  • Case Size: 33.5mm
  • Wrist Fit: 7.5 inch wrist
Posted at
Apr 28, 2025, 11:48 AM
Active
[WTS] RARE Omega Constellation 168.005 Champagne Linen Dial $2400 AUD

RARE Omega Constellation 168.005 Champagne Linen Dial $2400 AUD

Omega - 168.005 · $2,400
  • Dial color: Champagne Linen
Posted at
Apr 28, 2025, 1:58 AM
Active