Omega Constellation Constellation Co-Axial 31 Stainless Steel / Red Gold / MOP
Reference 123.20.31.20.55.001
About this watch
The Omega Constellation Co-Axial 31 is a masterpiece of luxury watchmaking, blending classic elements with contemporary flair. This stunning timepiece features a 31.00 mm round case crafted from the finest materials, ensuring durability while maintaining an air of elegance. The mother of pearl (MOP) dial is a standout feature, reflecting light beautifully and giving the watch a unique character that changes with the angle of view. The elegant dauphine hands glide effortlessly across the dial, adding a touch of grace to the overall aesthetic. At its heart lies the Omega caliber 8520, an automatic movement certified by the Swiss Official Chronometer Testing Institute (COSC) for precision and performance. With a power reserve of 50 hours, this watch is built to last, ensuring you can trust the time displayed on your wrist. The Co-Axial escapement minimizes friction between components, resulting in enhanced longevity and improved timekeeping accuracy. Whether you're dressing up for a formal event or looking for a stylish accessory for everyday wear, this watch elevates your look with its blend of sophistication and elegance.
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Key Features
- Omega caliber 8520 automatic movement
- Mother of pearl (MOP) dial with gem-set indexes
- Red Gold and Stainless Steel case
- 100 meters water resistance
- Chronometer certification by COSC
- Co-Axial escapement for improved accuracy
Specifications
- Brand
- Omega
- Family
- Constellation
- Model
- Constellation Co-Axial 31 Stainless Steel / Red Gold / MOP
- Reference
- 123.20.31.20.55.001
- Movement
- 8520
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Chronometer, Co-Axial Escapement
- Case
- 31mm
- Dial Color
- White
- Crystal
- Sapphire
- Water Resistance
- 100
Current Listings
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- Condition: Pre-owned with a scratch on the dial between 1 and 2
- Movement series: 5xx series (automatic)
- Case diameter: 34mm
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- Condition: nice condition
- Case size: 40mm diameter
- Strap material: AM strap
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- Condition: Good (with some hairline scratches)
- Case dimensions: 35mm diameter, 38.4mm lug-to-lug, 10.8mm thickness
- Bracelet size: adjustable to fit a 6.75 inch wrist
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- Condition: Pre-owned, needs service
- Case size: 34.5mm
- Diameter: 34.5mm
- Movement accuracy: Special chronometer certified with high accuracy

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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

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- Bracelet Links: 21 links (+1 extra)
- Bezel Type: fixed Stainless Steel bezel with recessed Roman Numerals
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VintageOmega Constellation Diamond SS/18kt YG
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- Condition: Good, with some minor flaws (dust under crystal/dial, missing end pieces on links)
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