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

Reference 123.55.27.20.05.002

About this watch

The Omega Constellation Co-Axial 27 is a stunning example of luxury timepiece craftsmanship, blending artistry, innovation, and classic style in a brushed yellow gold case adorned with gem-set bezel and mother of pearl dial featuring star motifs. The watch boasts the renowned Co-Axial escapement and free-sprung balance system with silicon balance spring, ensuring greater precision and durability. Its 100-meter water resistance and automatic winding mechanism make it perfect for everyday wear and various occasions. This timepiece is an investment in style, heritage, and performance, telling a story of craftsmanship honed over centuries. With its exceptional design and movement, the Omega Constellation Co-Axial 27 stands tall as a symbol of elegance, precision, and artistry.
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MSRP: $34,000
Market Price: $11,076

Key Features

  • Brushed yellow gold case
  • Gem-set bezel with precious stones
  • Mother of pearl dial with star motifs
  • Omega caliber 8521 movement with Co-Axial escapement
  • Free-sprung balance system with silicon balance spring
  • 100-meter water resistance
  • Automatic winding mechanism

Specifications

Brand
Omega
Family
Constellation
Model
Constellation Co-Axial 27 Brushed Yellow Gold / Diamond / MOP Stars
Reference
123.55.27.20.05.002
Movement
8521
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Yellow Gold 27mm
Dial Color
White
Crystal
Sapphire
Water Resistance
100

Current Listings

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A trio of vintage Omega watches including the Century Ref. 121001 from 1962 with a manual wind Cal. 269 movement and a gold-capped stainless steel caseback.

  • Case material 1: gold-capped
  • Case material 2: stainless steel
  • Dial color 1: beautiful 'Jupiter' patina
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Jan 28, 2026, 8:27 AM
Active
[WTS] Omega Constellation Globemaster Annual Calender 130.33.41.22.06.001 Box & Papers

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The Omega Constellation Globemaster Annual Calendar features a sunburst grey dial, applied hour markers, and a clean annual calendar display. It is powered by the Co-Axial Master Chronometer Caliber 8922, delivering outstanding precision and resistance to magnetic fields up to 15,000 gauss.

  • Condition: Great pre-owned condition
  • Movement: in-house Co-Axial Master Chronometer Caliber 8922
  • Bracelet material: stainless steel
Posted at
Jan 27, 2026, 11:44 PM
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[WTS] Omega Constellation 168.005 Dog-leg Lugs Crosshair Tropical Dial — $1,400 (Serviced / Shipping / Tariff Covered)

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Omega - 168.005 · $1,400
This Omega Constellation ref. 168.005 features a unique tropical dial with crosshair layout, well-matched hands and hour markers, and dog-leg lugs.

  • Condition: Great vintage condition
  • Movement Type: Automatic
  • Caliber: 561
  • Chronometer Certified: Yes
Posted at
Jan 27, 2026, 8:52 AM
Active
[WTS] Omega Constellation Pie Pan

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Additional Details: Excellent condition, recently serviced Omega Constellation Pie Pan.

  • Condition: Excellent
  • Servicing status: recently serviced
Posted at
Jan 26, 2026, 5:43 PM
Active
[WTS] Omega Steel ‘Pie Pan’ Constellation Dog-Legged Lugs - Ref. 168.005 - Caliber 561 Automatic Date - From 1968 - $2200

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The Omega Constellation 'Pie Pan' features a robust caliber 561 automatic movement with date, sunburst dial, and signature dog-legged lugs. It has a great construction and feel to the well-defined case design, making it an excellent dressy statement piece.

  • Condition: Excellent, minor patina on logo and date window
  • Case size: 35mm (excluding crown)
  • Diameter: 40mm
  • Movement: Caliber 561 automatic date
Posted at
Jan 26, 2026, 1:13 PM
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[WTS] Omega Constellation C Shape - 168.017 Circa 1969 only for 775$ Shipped 🚢

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Omega - 168.017 · $775
This Omega Constellation C Shape from 1969 features a stainless steel case with a 35mm diameter and an off-white dial.

  • Condition: Great (minor hairline scratches on case, little signs of aging on dial)
  • Case Size: 35mm
  • Movement: Automatic calibre 564
  • Crystal: Signed Omega crystal
Posted at
Jan 26, 2026, 8:08 AM
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A 1966 Omega Constellation ref. 168.004 with the sleek hidden crown case design, powered by the correct Omega Cal. 561 chronometer movement. The dial is original but shows signs of a past cleaning attempt. The watch has been serviced in June 2025.

  • Condition: Dial: original but shows signs of a past cleaning attempt; Case: original case, likely unpolished with honest scratches from normal wear. Movement serviced June 2025.
  • Case size without crown: 35mm
  • Movement caliber: Omega Cal. 561
  • Crystal type: new aftermarket replacement
Posted at
Jan 26, 2026, 7:57 AM
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[WTS] Omega Constellation 33mm 18kYG 166052/168033 MINT

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Omega - 166052/168033 · $4,200
A mint Omega Constellation in 18k yellow gold, featuring a 33mm case size and a unique combination of reference numbers 166052 and 168033.

  • Condition: MINT
  • Case size: 33mm
  • Lug-to-lug: 39mm
  • Lug width: 19mm
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Jan 25, 2026, 1:44 PM
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[WTS] Omega Constellation 35mm 18K YG Champagne Arrowhead Pie-Pan Dial (Serviced), Ref. 2853 SC

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a 2 - 3 sentence summary of the Omega Constellation 35mm 18K YG Champagne Arrowhead Pie-Pan Dial (Serviced)

  • Condition: Serviced
  • Material: 18K Yellow Gold
  • Dial color: Champagne Arrowhead Pie-Pan Dial
Posted at
Jan 23, 2026, 9:55 PM
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