Omega Constellation Constellation Co-Axial 31 Stainless Steel / MOP
Reference 123.10.31.20.55.001
About this watch
The Omega Constellation Co-Axial 31 is a stunning piece that beautifully marries function and form. With its exquisite design, reliable movement, and versatile nature, it’s a watch that can easily become a cherished part of your collection. This timepiece is perfect for anyone who appreciates fine craftsmanship and luxury, whether you’re a watch collector, a business professional, or someone who enjoys elegant accessories. The Omega Constellation Co-Axial 31 is not just a statement piece; it’s a testament to the legacy of innovation and excellence that Omega embodies. Its Chronometer certification ensures accuracy, while its water resistance up to 100 meters makes it suitable for swimming and snorkeling. This watch can be dressed up or down, making it an excellent addition to any wardrobe. When you wear an Omega, you’re embracing a legacy of precision and elegance.
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Key Features
- Omega caliber 8520 movement
- Sapphire crystal glass
- 100m water resistance
- Stunning MOP dial
- Gem-set indexes
- Chronometer certified for accuracy
Specifications
- Brand
- Omega
- Family
- Constellation
- Model
- Constellation Co-Axial 31 Stainless Steel / MOP
- Reference
- 123.10.31.20.55.001
- Movement
- 8520
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Chronometer, Co-Axial Escapement
- Case
- Stainless Steel 31mm
- Dial Color
- White
- Crystal
- Sapphire
- Water Resistance
- 100
Current Listings
![[WTS] Rare 1959 Omega Constellation w/ Railtrack Dial, Steel Case & Special Chronometer Movement](https://preview.redd.it/kpgaecagqzxe1.jpg?width=640&crop=smart&auto=webp&s=f0ca08586250ecc4ad9654138f812186603c0fc8)
Rare 1959 Omega Constellation w/ Railtrack Dial, Steel Case & Special Chronometer Movement
A rare 1959 Omega Constellation with a railtrack dial and special chronometer movement. The watch has an original non-refinished silver dial with patina and an original stainless steel case with wear.
- Condition: Pre-owned, needs service
- Case size: 34.5mm
- Diameter: 34.5mm
- Movement accuracy: Special chronometer certified with high accuracy

1970s Omega Constellation Ref: 391.0801 Quartz with Box
A 1970s Omega Constellation Ref: 391.0801 Quartz watch in excellent condition, featuring a 32mm stainless steel case and original horizontal grained silver dial.
- Condition: Excellent with very light wear from use
- Case Size: 32mm
- Bracelet Links: 23
- Movement Type: Quartz

2000s Omega Constellation Ref: 1502.30 Automatic
This is a 2000s Omega Constellation Ref: 1502.30 Automatic watch, featuring a 34mm Stainless Steel case and an excellent original silver/white dial.
- Condition: Very nice with some wear from use
- Case Size: 34mm diameter
- Bracelet Links: 21 links (+1 extra)
- Bezel Type: fixed Stainless Steel bezel with recessed Roman Numerals
![[WTS] VintageOmega Constellation Diamond SS/18kt YG](https://preview.redd.it/ujso6c46klxe1.jpg?width=640&crop=smart&auto=webp&s=2cb8065b102b68512e80b92cb8de7594b83c2829)
VintageOmega Constellation Diamond SS/18kt YG
This vintage Constellation features a diamond bezel and dial, with a quartz movement running properly. The watch has a 33.5mm case and fits a 7.5 inch wrist.
- Condition: Good, with some minor flaws (dust under crystal/dial, missing end pieces on links)
- Case Size: 33.5mm
- Wrist Fit: 7.5 inch wrist
![[WTS] RARE Omega Constellation 168.005 Champagne Linen Dial $2400 AUD](https://preview.redd.it/9zknijjsmixe1.jpg?width=640&crop=smart&auto=webp&s=f91403d525bfef8107499c6a1d36f9a1e0ecf5fb)
RARE Omega Constellation 168.005 Champagne Linen Dial $2400 AUD
- Dial color: Champagne Linen
![[WTS] Omega Constellations De Luxe 18kt Solid Gold Case, Bracelet, and Dial w/ Original Box and Buckle ref. 168.004/14](https://preview.redd.it/ebeu8ldrtfxe1.jpg?width=640&crop=smart&auto=webp&s=500df7fa85bf3b5be8aae8d7f1ddc70764917742)
Omega Constellations De Luxe 18kt Solid Gold Case, Bracelet, and Dial w/ Original Box and Buckle ref. 168.004/14
A solid gold Omega Constellations De Luxe with a 18kt gold case, dial, and vintage aftermarket bracelet, featuring an automatic chronometer movement and original box and buckle.
- Condition: Excellent
- Case weight: ~58g
- Bracelet weight: 34g
- Bracelet repair: mesh repaired in two places
![[WTS] Omega Constellation 167.005](https://preview.redd.it/3ij5t6gndfxe1.jpg?width=640&crop=smart&auto=webp&s=be9fe82adfdf1d166bc408097ab8705d1aea5af2)
Omega Constellation 167.005
This Omega Constellation features a 36mm case, powered by the 551 movement, and has developed a nice patina on its dial.
- Condition: Pre-owned with scratches and wear marks
- Case size: 36mm diameter
- Movement: 551 calibre
![[WTS] Dressy Duo - Omega 35mm Constellation & Discontinued Mod Size, Tiffany Blue Tiffany East West](https://preview.redd.it/py4q96ta3fxe1.jpeg?auto=webp&s=111a32e962398bde9f5626b9f1bb586babc508a6)
Dressy Duo - Omega 35mm Constellation & Discontinued Mod Size, Tiffany Blue Tiffany East West
A dressy duo of Omega and Tiffany watches, both recently serviced, with the Omega being an automatic and the Tiffany East West in Tiffany Blue.
- Condition: essentially mint condition
- Size1: 35mm diameter
- Box1: no box
- Papers1: no papers
![[WTS] Omega Constellation Chronometer 168.0056 With Papers](https://preview.redd.it/mu5ym7jj4dxe1.jpg?width=640&crop=smart&auto=webp&s=b70ab365fc6c4a45b087948a3697902077505666)
Omega Constellation Chronometer 168.0056 With Papers
This Omega Constellation Chronometer is a great example of Gerald Genta's 'C-shape' design, featuring an Omega Caliber 1011 automatic movement that has been timegrapher tested for accuracy. The watch comes with original papers from a Japan boutique and includes a leather strap with buckle.
- Condition: Vintage, very good condition
- Movement: Omega Caliber 1011, automatic, chronometer-rated
- Functions: Time and date
- Case size: 35mm diameter