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

Reference 123.55.27.20.55.001

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

About this watch

The Omega Constellation Co-Axial 27 is a masterpiece that embodies luxury and elegance. This stunning timepiece boasts an exquisite brushed red gold casing, measuring just 27mm in diameter, tailored for those who favor understated yet luxurious looks. The mother-of-pearl (MOP) dial adds depth with its iridescent quality, changing with the light to create a unique charm that captivates anyone's attention. The gem-set bezel and indexes elevate the watch's luxury quotient, making it a statement piece that shines like a supernova. At its heart lies the Omega caliber 8521 movement, showcasing precision and reliability through its self-winding Co-Axial escapement, reducing friction and enhancing precision. With a power reserve of 50 hours and a frequency of 25,200 vibrations per hour, this watch is engineered for efficiency. It boasts a water resistance of up to 100 meters (or 330 feet), making it suitable for everyday wear, swimming, or water sports without worrying about damage. The supple strap complements the luxurious feel, ensuring comfort and versatility in any occasion.
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Key Features

  • Brushed Red Gold Casing
  • Mother-of-Pearl Dial with Iridescent Quality
  • Gem-Set Bezel and Indexes
  • Omega Caliber 8521 Movement with Co-Axial Escapement
  • Water Resistance up to 100 meters (330 feet)
  • Power Reserve of 50 hours
  • Frequency of 25,200 vibrations per hour

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 27 Brushed Red Gold / Diamond / MOP Supernova
Reference
123.55.27.20.55.001
Movement
8521
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Red Gold 27mm
Dial Color
White
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Omega constellation chronometer ref 198.0104 & Omega Polaris Ref 396.1022.

Omega constellation chronometer ref 198.0104 & Omega Polaris Ref 396.1022.

Omega · $700
The seller is listing two vintage Omega watches: a Constellation chronometer quartz (ref 198.0141) and an Omega Polaris (ref 396.1022). Both watches are from the 1980s, feature sapphire crystals, and have strap sizes up to 7.5 inches.

  • Condition: very close to perfect
  • Case size: 29mm without crown x 33mm
  • Movement: Omega Cal: 1431 Quartz
  • Crystal type: Sapphire Crystal
Posted at
Feb 12, 2026, 8:29 AM
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[WTS] Omega Constellation Jumbo 14777-61SC 37mm | Good Condition (Serviced) | $1600

Omega Constellation Jumbo 14777-61SC 37mm | Good Condition (Serviced) | $1600

Omega - 14777-61SC · $1,600
The Omega Constellation Jumbo Ref. 14777-61SC is a vintage watch with a clean, flat dial aesthetic and a modern wrist presence. It features a stainless steel case with beautifully curved lugs and a sharp bezel, and powers Omega's Caliber 561 chronometer-rated automatic movement.

  • Condition: Good (serviced)
  • Case diameter: 37mm
  • Lug width: 19mm
  • Movement: Caliber 561 (chronometer-rated automatic movement with date complication)
Posted at
Feb 10, 2026, 11:15 PM
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[WTS] OMEGA Constellations Chronometer Certified 168.018 original bracelet, excellent condition

OMEGA Constellations Chronometer Certified 168.018 original bracelet, excellent condition

OMEGA - 168.018 · $1,500
This Omega Constellation Chronometer is a certified timepiece featuring an automatic Cal 564 movement and a stainless steel case with a silver dial.

  • Condition: excellent
  • Case dimensions: 35 x 40mm, thickness 12mm, 19mm lug width
  • Movement: Cal 564 Automatic 24 Jewels 19800 beats per hour
  • Accuracy: +/-5s per day
Posted at
Feb 9, 2026, 10:08 PM
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[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
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[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
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[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
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[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
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
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[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
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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 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
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