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

Reference 123.55.27.20.05.004

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

About this watch

The Omega Constellation 123.55.27.20.05.004 is a masterpiece that embodies luxury, precision, and elegance. This stunning timepiece boasts an 18 Ct red gold case, gem-set bezel, and scratch-resistant sapphire glass, making it a true work of art. The Omega caliber 8521 movement, featuring Co-Axial escapement and silicon balance-spring, ensures unparalleled accuracy and durability. With its white mother of pearl (MOP) dial adorned with diamond accents, this watch is like wearing a piece of the night sky on your wrist. Its impressive water resistance of up to 1000 meters makes it perfect for diving enthusiasts, while its compact size of 27.00 mm ensures elegance without bulkiness. The Constellation Co-Axial 27 is not just a watch; it's a certified chronometer, trusted to keep impeccable time. Whether you're at a board meeting or a beach party, this watch has got you covered. Its date function and luxurious finishes make it a true masterpiece of horology.
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MSRP: $34,000
Market Price: $14,472

Key Features

  • 18 Ct red gold case
  • Gem-set bezel with scratch-resistant sapphire glass
  • Omega caliber 8521 movement with Co-Axial escapement and silicon balance-spring
  • White mother of pearl (MOP) dial with diamond accents
  • Impressive water resistance of up to 1000 meters
  • Compact size of 27.00 mm
  • Certified chronometer with date function

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 27 Brushed Red Gold / Diamond / MOP Stars
Reference
123.55.27.20.05.004
Movement
8521
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Red Gold 27mm
Dial Color
White
Crystal
Sapphire
Water Resistance
1000

Current Listings

[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
Up for sale is an Omega Constellation C Shape reference 168.017 from 1969, featuring a stainless steel case with a 35mm diameter and an off-white dial.

  • Condition: great, with a few hairline scratches
  • Case Size: 35mm diameter
  • Movement: Calibre 564, automatic
Posted at
Jan 18, 2026, 7:52 AM
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[WTS] Omega Constellation 🌌 blue 1990s 35.5mm 🔥

Omega Constellation 🌌 blue 1990s 35.5mm 🔥

Omega - Constellation Perpetual Date · $1,150
This Omega Constellation is a quartz perpetual date watch from the early 1990s. It features an 18k omega stamp and a blue sunburst dial that appears to shift colors depending on the angle of the light.

  • Movement type: quartz
  • Year of production: early 1990s
  • Case diameter: 35.5mm
Posted at
Jan 17, 2026, 7:09 PM
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[WTS] 1971 Omega Constellation ref. 168.059 w/ Cal. 1011 – Green fumé “spider” dial – $795 shipped

1971 Omega Constellation ref. 168.059 w/ Cal. 1011 – Green fumé “spider” dial – $795 shipped

Omega - 168.059 · $795
  • Year: 1971
  • Caliber: Cal. 1011
Posted at
Jan 15, 2026, 11:05 AM
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[WTS] Timeless Gold Elegance – Omega Constellation 10k Gold-Filled ✨

Timeless Gold Elegance – Omega Constellation 10k Gold-Filled ✨

Omega - Constellation · $699
This Omega Constellation in 10k gold-filled is a classic watch with understated luxury and timeless style, perfect for everyday wear.

  • Condition: Pre-owned with new battery
  • Case Size: 34mm diameter
  • Material: 10k gold-filled
  • Strap: High-quality AM strap
Posted at
Jan 14, 2026, 1:49 AM
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[WTS] Omega Constellation linen dial ref 168017 cal 564

Omega Constellation linen dial ref 168017 cal 564

Omega - 168017 · $4,000
This Omega Constellation features a gold linen dial and comes equipped with an automatic movement powered by caliber 564. It's ready to be worn with its new generic strap and buckle.

  • Condition: Pre-owned, requires servicing
  • Movement: caliber 564
  • Functions work: yes all functions are working
Posted at
Jan 12, 2026, 12:05 PM
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[WTS] 1958 Omega Constellation ‘Pie Pan’ Arrowhead Ref. 2852-1SC | Good Condition (Serviced) | $2850

1958 Omega Constellation ‘Pie Pan’ Arrowhead Ref. 2852-1SC | Good Condition (Serviced) | $2850

Omega - 2852-1SC · $2,810
The Omega Constellation 'Pie Pan' Arrowhead Ref. 2852-1SC is one of the most sought-after and distinctive Constellation references from the mid-1950s. This particular example features the iconic 'Pie-Pan' dial with large applied arrowhead hour markers, often referred to by collectors as 'Arrowhead' indices.

  • Condition: Good, serviced
  • Case diameter: 34.5mm (excluding crown)
  • Lug-to-lug distance: 43.5mm
  • Thickness: 11mm
Posted at
Jan 12, 2026, 10:11 AM
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[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
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[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

Omega - 121.92.41.50.01.001 · $2,599
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
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[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
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