Omega Constellation Constellation Co-Axial 27 Brushed Stainless Steel / Yellow Gold / MOP Supernova

Reference 123.20.27.20.55.002

About this watch

The Omega Constellation Co-Axial 27 is a masterpiece of horology, boasting exquisite craftsmanship, high functionality, and stunning aesthetics. Its combination of brushed stainless steel and yellow gold creates a striking contrast that exudes luxury. The round shape is classic, with a 27 mm diameter perfect for those who prefer a more dainty watch without sacrificing visibility. The Mother of Pearl (MOP) Supernova dial is a showstopper, shimmering with iridescence that changes hue with the light. Gem-set indexes add a sparkling touch that perfectly complements the luxurious design. With its automatic Omega Caliber 8520 movement, this watch delivers precision and reliability, featuring a power reserve of 50 hours and a frequency of 25,200 vibrations per hour. Certified as a chronometer by the COSC, it's a trusted friend who always keeps you on time. The watch boasts a water resistance of up to 100 meters, making it perfect for casual water activities. Its comfortable bracelet is crafted from brushed stainless steel and yellow gold, providing a snug yet comfortable fit. With its stunning design and reliable movement, the Omega Constellation Co-Axial 27 is a timeless piece that blends tradition with modernity.
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MSRP: $8,600
Market Price: $4,133

Key Features

  • Omega Caliber 8520 Automatic Movement
  • Stainless Steel & Yellow Gold Case Material
  • Sapphire Crystal Glass
  • Gem-Set Indexes for Added Luxury
  • Water Resistance up to 100 meters
  • Certified Chronometer by COSC

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 27 Brushed Stainless Steel / Yellow Gold / MOP Supernova
Reference
123.20.27.20.55.002
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 Constellation Pie Pan Ref. 168.005 with Original BoR Bracelet | Great Condition (Serviced) | $2700

Omega Constellation Pie Pan Ref. 168.005 with Original BoR Bracelet | Great Condition (Serviced) | $2700

Omega - 168.005 · $2,700
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 condition, serviced
  • Case size: 34.5mm diameter
  • Movement type: Automatic
  • Jewels: 24
Posted at
Jan 10, 2026, 10:00 PM
Active
[WTS] Omega Constellation Double Eagle Chronograph – Ref. 121.92.41.50.01.001 – 41mm – Complete Set – $2,599 Shipped

Omega Constellation Double Eagle Chronograph – Ref. 121.92.41.50.01.001 – 41mm – Complete Set – $2,599 Shipped

The Omega Constellation Double Eagle Chronograph features a 41mm titanium case and carbon fiber dial with integrated chronograph layout powered by Omega's co-axial chronometer movement.

  • Condition: Good overall with light, honest wear
  • Case material: titanium
  • Diameter: 41mm
Posted at
Jan 10, 2026, 9:22 PM
Active
[WTS] Omega Constellation 🌌 Gerald Genta

Omega Constellation 🌌 Gerald Genta

Omega - Constellation · $850
This Omega Constellation is a classic watch from the Gerald Genta design era, known for its iconic style. It's a late 60s model that runs great and has been purchased at an estate sale.

  • Gerald genta design: true
Posted at
Jan 10, 2026, 5:07 PM
Active
[WTS] Omega Constellation Globemaster – 39mm Blue Pie Pan Dial – Set

Omega Constellation Globemaster – 39mm Blue Pie Pan Dial – Set

The Omega Constellation Globemaster features a 39mm stainless steel case, coin-edge bezel, and classic pie-pan dial inspired by original Constellation models of the 1950s.

  • Case size: 39mm
  • Diameter: 39mm
Posted at
Jan 9, 2026, 7:58 PM
Active
[WTS] Omega Constellation C Shape - 168.017 Circa 1969 only for 775$ Shipped 🚢

Omega Constellation C Shape - 168.017 Circa 1969 only for 775$ Shipped 🚢

Omega - 168.017 · $775
A 1969 Omega Constellation C Shape reference 168.017 featuring a stainless steel case and automatic movement calibre 564.

  • Condition: Great, minor hairline scratches
  • Case size: 35mm diameter
  • Movement: Calibre 564 automatic
Posted at
Jan 9, 2026, 8:05 AM
Active
[WTS] Omega Constellation Crosshair Dial 14381-11 SC | Great Original Condition (Serviced) | $1750

Omega Constellation Crosshair Dial 14381-11 SC | Great Original Condition (Serviced) | $1750

Omega - 14381-11 SC · $1,810
The Omega Constellation Ref. 14381-11 SC is a fine example from one of Omega’s most respected design periods. Produced around 1959 to 1961, this model represents the golden age of mid-century Swiss watchmaking.

  • Condition: Great original condition, recently serviced
  • Case size: 34.5 mm × 43.5 mm
  • Dial condition: clean and crisp, light patina dot on the dial
  • Movement type: chronometer-certified automatic
Posted at
Jan 7, 2026, 10:27 PM
Active
[WTS] [WW] Omega Omega Constellation Ladies 24mm MOP

[WW] Omega Omega Constellation Ladies 24mm MOP

Omega - 6563-875 · $700
The Omega Constellation Ladies watch features a stainless steel case with a mother-of-pearl dial. It has a quartz movement for accurate timekeeping and comes with its original box and papers.

  • Condition: Good - shows signs of wear (scratches on bracelet and bezel, also there are dents on the back case)
  • Case Material: Stainless Steel
  • Movement: Quartz
  • Bracelet Length: 180mm (approx.)
Posted at
Jan 6, 2026, 3:13 PM
Active