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 Automatic | Stainless Steel and Gold | Reference 1202.30.00

Omega Constellation Automatic | Stainless Steel and Gold | Reference 1202.30.00

Omega - 1202.30.00 · $3,200
The Omega Constellation Automatic features a stunning lattice pattern dial and a thin, flush case for comfortable daily wear.

  • Condition: Excellent Pre-Owned
  • Case size: 35.5MM diameter
  • Serial number date: 1999
Posted at
Apr 20, 2026, 1:51 PM
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[WTS] 1960s Omega Constellation Pie Pan Ref. 167.005 | Symmetrical No-Date Dial | Caliber 551 Chronometer | Great unpolished Condition | All Original | $ 2100 (SERVICED)

1960s Omega Constellation Pie Pan Ref. 167.005 | Symmetrical No-Date Dial | Caliber 551 Chronometer | Great unpolished Condition | All Original | $ 2100 (SERVICED)

Omega - 167.005 · $2,100
A mid-century minimalist watch featuring a rare No-Date configuration and the iconic Pie Pan dial, housing the legendary Caliber 551 movement.

  • Condition: Excellent unpolished condition
  • Movement: Serviced Omega Caliber 551 Automatic (24 Jewels), Chronometer rated
  • Dial: Original Silver Sunburst Pie Pan dial with applied steel markers and hands
  • Case: 34.5mm Stainless Steel construction, 8 stars visible on Observatory caseback
Posted at
Apr 20, 2026, 1:32 PM
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[WTS] 1966 Omega Constellation ref. 168.005 w/ Cal. 561 Serviced – crosshair dome dial – $1450 all-in

1966 Omega Constellation ref. 168.005 w/ Cal. 561 Serviced – crosshair dome dial – $1450 all-in

Omega - 168.005 · $1,450
This is a 1966 Omega Constellation ref. 168.005, featuring an original silver crosshair domed dial and Cal. 561 automatic chronometer movement.

  • Condition: Pre-owned with minor signs of aging
  • Case Size: 34.5mm diameter
  • Crystal Type: Plexiglass
  • Crown Period Correct: No
Posted at
Apr 20, 2026, 9:28 AM
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[WTS] *Rare* Vintage 1960s 168.005 Rose Gold Date Omega Constellation with Vertical Brushed dial- Serviced

*Rare* Vintage 1960s 168.005 Rose Gold Date Omega Constellation with Vertical Brushed dial- Serviced

Omega - 168.005 · $1,200
This vintage Omega Constellation Date features a vertical brushed dial and the Omega 561 Caliber movement, which has been serviced.

  • Condition: good condition
  • Movement caliber: Omega 561
  • Dial finish: vertical brushed
  • Case dimensions: [object Object]
Posted at
Apr 19, 2026, 6:20 PM
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[WTS] Vintage 1960s 168.005 Date Yellow Gold Omega Constellation- Serviced $950

Vintage 1960s 168.005 Date Yellow Gold Omega Constellation- Serviced $950

Omega - 168.005 · $950
  • Condition: Good, some minor cosmetic damage
  • Movement caliber: Omega 565
  • Dial condition: Very good for its age
  • Case dimensions: [object Object]
Posted at
Apr 19, 2026, 6:15 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
This is a rare Omega Constellation Chronometer certified model, featuring an ultra-thin design and small size but good wrist presence.

  • Condition: Excellent, with normal signs of wear and used
  • Movement: Cal 712 Automatic 24 Jewels, 19800 beats per hour
  • Dial: Original silver dial and handset
  • Crystal: Acrylic Crystal free from scratches, signed in the center by Omega
Posted at
Apr 19, 2026, 10:26 AM
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[WTS] 1967 Omega Constellation Pie Pan Cal. 564 Ref. 168.005 | Great Condition (Serviced) | $2600

1967 Omega Constellation Pie Pan Cal. 564 Ref. 168.005 | Great Condition (Serviced) | $2600

Omega - 168.005 · $2,600
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 serviced condition
  • Case size: 34mm
  • Movement: Omega Calibre 564
  • Jewels: 24
Posted at
Apr 18, 2026, 11:13 PM
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[WTS] Rare Vintage Omega Constellation “Manhattan” Chronometer ST 368.1075 – Very Nice Condition

Rare Vintage Omega Constellation “Manhattan” Chronometer ST 368.1075 – Very Nice Condition

Omega - ST 368.1075 · $999
A rare vintage Omega Constellation “Manhattan” chronometer, a classic example of Omega’s timeless dress-watch design, first introduced in the mid-1980s.

  • Condition: Very nice vintage condition, showing light signs of honest wear
  • Movement: Automatic self-winding chronometer-certified movement, typically the Omega Caliber 1110.11.40 (based on the ETA 2892-2)
  • Diameter: 35mm diameter stainless steel case
  • Bezel: Yellow gold bezel
Posted at
Apr 18, 2026, 9:13 PM
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[WTS] Omega Constellation Pie span Gold Cap 168.005 Great Condition All Original $2400

Omega Constellation Pie span Gold Cap 168.005 Great Condition All Original $2400

Omega - 168.005 · $2,400
A classic early-60s Omega Constellation with an iconic pie-pan dial and clean case, perfectly representing Omega's chronometer design language at its peak.

  • Condition: Great Condition
  • Case material: Gold Cap
  • Movement: Cal. 564 quickset Automatic
Posted at
Apr 18, 2026, 1:45 PM
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