Omega Constellation Constellation Co-Axial 27 Brushed Stainless Steel / Red Gold / Diamond / MOP

Reference 123.25.27.20.55.006

About this watch

The Omega Constellation Co-Axial 27 is a masterpiece that combines stunning aesthetics and impressive mechanics. Measuring at 27.00 mm, this watch features a Mother of Pearl (MOP) dial that shimmers in various light conditions, surrounded by gem-set indexes and Dauphine hands. The bezel is adorned with exquisite gems, reflecting light beautifully without being overly ostentatious. Protected by durable sapphire glass, this watch is designed for those who appreciate both form and function. Its Omega Caliber 8520 movement features a chronometer certification, a frequency of 25,200 beats per hour, and a power reserve of 50 hours. Beyond telling the time, it offers a date function and Co-Axial escapement, reducing friction between components for enhanced longevity and accuracy. With its unique charm, elegant features, and innovative movement, this watch stands out in the world of luxury watches.
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Key Features

  • Omega Caliber 8520 Movement
  • Chronometer Certification
  • Sapphire Crystal
  • Mother of Pearl Dial
  • Gem-Set Indexes
  • Dauphine Hands
  • Co-Axial Escapement
  • Date Function
  • Water Resistance up to 100 meters

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 27 Brushed Stainless Steel / Red Gold / Diamond / MOP
Reference
123.25.27.20.55.006
Movement
8520
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
27mm
Dial Color
White
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] OMEGA Constellations Chronometer certified 167.021, serviced

OMEGA Constellations Chronometer certified 167.021, serviced

OMEGA - 167.021 · $1,300
A rare Omega Constellation Chronometer model 167.021, officially certified and ultra thin, featuring a silver dial and automatic movement.

  • Condition: Used with normal signs of wear and use
  • Case dimensions: 33 x 39mm, 8mm thickness, 19mm lug width
  • Movement type: Cal 712 Automatic, 24 Jewels, 19800 beats per hour
  • Crystal condition: Acrylic Crystal with no scratches and Omega signed in the center
Posted at
Feb 8, 2026, 8:50 AM
Active
[WTS] 10k Gold Filled Omega Constellation. STEAL DEAL

10k Gold Filled Omega Constellation. STEAL DEAL

Omega - Constellation · $555
This vintage Omega Constellation is a mid-century design in a classic 34mm case that exudes Swiss elegance.

  • Case size: 34mm
Posted at
Feb 6, 2026, 10:59 PM
Active
[WTS] Omega Double Eagle Constellation  |  Open Case Back Chronograph  |  Reference 1819.51.91

Omega Double Eagle Constellation | Open Case Back Chronograph | Reference 1819.51.91

Omega - 1819.51.91 · $4,900
This Omega Double Eagle Constellation features an open case back showcasing the movement, with a 41MM case size and powered by Co-Axial calibre 3313.

  • Condition: Excellent Pre-Owned
  • Case size: 41MM
  • Crystal status: replaced
  • Strap type: OEM rubber strap
Posted at
Feb 6, 2026, 2:50 PM
Active
[WTS] Omega Double Eagle Constellation  |  Open Case Back Chronograph  |  Reference 1819.51.91

Omega Double Eagle Constellation | Open Case Back Chronograph | Reference 1819.51.91

a Omega Double Eagle Constellation watch with an open case back chronograph, details to be specified.

  • Case back type: Open Case Back
Posted at
Feb 6, 2026, 2:47 PM
Active
[WTS] Omega Constellation Pie Pan 168.005 w/bracelet | All original | $2500 shipped (SERVICED)

Omega Constellation Pie Pan 168.005 w/bracelet | All original | $2500 shipped (SERVICED)

Omega - 168.005 · $2,500
A classic mid-60s Constellation with an iconic pie-pan dial and stainless steel case, powered by Omega's chronometer-rated Caliber 561.

  • Condition: All original
  • Movement caliber: Cal. 561 Automatic
  • Case material: Stainless Steel
  • Bracelet type: Original Omega bracelet
Posted at
Feb 6, 2026, 11:22 AM
Active
[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 with a crisp sunburst dial and thick hour markers at the quarters. The watch has a 35mm diameter (excluding the crown) and is powered by an excellent caliber 564 automatic movement with date.

  • Condition: Mint, likely new-old-stock
  • Movement caliber: 564 Chronometer Automatic Date
  • Case dimensions: 35mm diameter excluding crown
  • Lug type: straight lugs
Posted at
Feb 5, 2026, 1:28 PM
Active
[WTS] 1950s Omega Constellation Calendar Chronometer Certified 2943-1SC, 14k bezel, serviced! - $1365 shipped!!

1950s Omega Constellation Calendar Chronometer Certified 2943-1SC, 14k bezel, serviced! - $1365 shipped!!

Omega - 2943-1SC · $1,365
A beautiful vintage Omega Constellation Calendar automatic winding watch, circa 1957, with a 14k solid gold bezel and serviced in 2025.

  • Condition: 9/10
  • Case size: 35mm
  • Caliber: 504 chronometer grade
Posted at
Feb 5, 2026, 7:30 AM
Active
[WTS] Vintage Omega Constellation 168.029 Day Date

Vintage Omega Constellation 168.029 Day Date

Omega - 168.029 · $949
A vintage Omega Constellation from the late 1960s to early 1970s, designed by Gerald Genta, featuring a sharp, unpolished case and an original sunburst dial.

  • Case type: cushion (C-case)
  • Bezel material: 18k white gold
  • Bezel style: fluted
Posted at
Feb 2, 2026, 11:01 PM
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[WTS] Omega Constellation Day-Date Quartz Just Serviced c.1980

Omega Constellation Day-Date Quartz Just Serviced c.1980

This is a classic Omega Constellation with day-date display and slim quartz profile from the 1980s. It has been recently serviced and is running properly.

  • Condition: Set watch only, with some wear on the case and light marks on the crystal
  • Era: c.1980
  • Movement Type: Quartz
  • Functionality: Day-Date
Posted at
Jan 30, 2026, 8:34 PM
Active