Omega Constellation Constellation Co-Axial 27 Brushed Red Gold / Diamond / Diamond Moon

Reference 123.55.27.20.55.005

Omega Constellation Co-Axial 27 Brushed Red Gold / Diamond / Diamond Moon

About this watch

The Omega Constellation Co-Axial 27 embodies the essence of luxury watchmaking with its exquisite design, advanced movement, and durable construction. This stunning timepiece features a brushed red gold case radiating warmth and elegance, complemented by a gem-set bezel that adds a touch of sparkle. The mother-of-pearl dial provides an excellent contrast against the gold and diamonds, ensuring legibility while making a statement piece. At its heart lies the Omega caliber 8421, a self-winding movement with a Co-Axial escapement, enhancing precision and stability. With a power reserve of 50 hours and a frequency of 25,200 vibrations per hour, this movement is designed for longevity and reliability. The watch boasts a water resistance rating of 100 meters, making it suitable for everyday wear. Its round shape complements the overall aesthetic, making it perfect for both casual and formal occasions.
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Key Features

  • Omega caliber 8421 self-winding movement
  • Co-Axial escapement for precision and stability
  • Water resistance up to 100 meters
  • Mother-of-pearl dial with gem-set bezel
  • Brushed red gold case with 18 Ct red gold oscillating mass
  • Exclusive Geneva waves in arabesque finish on movement
  • High-quality strap for comfort

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 27 Brushed Red Gold / Diamond / Diamond Moon
Reference
123.55.27.20.55.005
Movement
8421
Movement Features
  • Hours, Minutes, Seconds
  • 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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