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.
Buy Now on Jomashop
This is an affiliate link
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
![[WTS] Omega Constellation Manhattan 168.0075 18k Bezel Two Tone Watch 35.5mm - $1300 SHIPPED](https://preview.redd.it/qs1r8njzmhqg1.jpg?width=640&crop=smart&auto=webp&s=eb83ce1564421bcd6aa27950fcf6747837776f3c)
Omega Constellation Manhattan 168.0075 18k Bezel Two Tone Watch 35.5mm - $1300 SHIPPED
Up for sale is this stunning Omega Constellation Manhattan Automatic watch, with a gold champagne dial and a classic vintage dress watch design.
- Condition: Great mechanical condition
- Case size: 35.5mm diameter
- Material: Stainless steel and solid 18k yellow gold
- Movement: Omega Cal 1111
![[WTS] Omega Constellation Kalekadora Mini Ladies 1535.73, Factory Diamonds, W/ Card](https://preview.redd.it/w2o2lsqugfqg1.jpg?width=640&crop=smart&auto=webp&s=4ee125cd2c9e9ac9480749ee3ba72753203e4c42)
Omega Constellation Kalekadora Mini Ladies 1535.73, Factory Diamonds, W/ Card
The Omega Constellation Kalekadora Mini is a ladies' watch featuring a pink mother-of-pearl dial and a diamond bezel.
- Condition: Excellent condition
- Case size: ~17x23mm
- Movement: Quartz
- Dial color: Pink MOP
![[WTS] Excellent Omega Steel ‘Pie Pan’ Constellation Dog-Legged Lugs Onyx Markers - Ref. 168.005 - Caliber 561 Automatic Date - From 1966 - $2500 Shipped & Duties Covered](https://preview.redd.it/cl7eo25l7fqg1.jpg?width=640&crop=smart&auto=webp&s=e82b2165b7b30556f2a3b29b9a219589401719fa)
Excellent Omega Steel ‘Pie Pan’ Constellation Dog-Legged Lugs Onyx Markers - Ref. 168.005 - Caliber 561 Automatic Date - From 1966 - $2500 Shipped & Duties Covered
A stunning Omega Constellation 'Pie Pan' with a sunburst dial and caliber 561 automatic movement. The case is sharp and retains its original beveled angles, and the observatory emblem on the case is crisp.
- Condition: Excellent, unpolished
- Movement: Caliber 561 Automatic Date
- Case size: 35mm (excluding crown)
- Water resistance: Not specified
![[WTS] 1962 Omega Constellation ref. 14777 Chronometer Cal. 531 w/ crosshair dial and BOR braclet - 'Jumbo' 37mm case - $1250 shipped](https://preview.redd.it/wlmfdkpfvspg1.jpg?width=640&crop=smart&auto=webp&s=6bbb4e5840f521f1b6f9128156d7089bea3dca40)
1962 Omega Constellation ref. 14777 Chronometer Cal. 531 w/ crosshair dial and BOR braclet - 'Jumbo' 37mm case - $1250 shipped
This 1962 Omega Constellation ref. 14777 features a 37mm stainless-steel case, chronometer-rated cal. 561 movement, and an original champagne dial with crosshair design.
- Condition: Shows signs of wear and past polish, but still presents well on wrist
- Case Size: 37mm
- Diameter Excluding Crown: true
- Lug Shape: decent
![[WTS] 2025 Omega Constellation 41mm Steel Meteorite Dial 131.30.41.21.99.001 Full Set](https://preview.redd.it/c65kqokpqopg1.jpg?width=640&crop=smart&auto=webp&s=ad3b2753cf553bb0c12d660931ff8596cde5d435)
2025 Omega Constellation 41mm Steel Meteorite Dial 131.30.41.21.99.001 Full Set
This Omega Constellation features a 41mm stainless steel case, black ceramic bezel with liquid metal Roman numerals, meteorite dial with black PVD hands & markers, and a stainless steel bracelet. The watch is from 2025 and comes in full set condition.
- Condition: Nice preowned condition with some light scratches on the case and bracelet.
- Case material: stainless steel
- Bezel material: black ceramic
- Dial description: meteorite dial
![[WTS] Omega Constellation Chronometer Quartz with Original Bracelet for sale $599 - Shipped](https://preview.redd.it/17g4svtq6opg1.jpg?width=640&crop=smart&auto=webp&s=ddb39244fbcb77a6bd64cb667d59750cad838ebd)
Omega Constellation Chronometer Quartz with Original Bracelet for sale $599 - Shipped
a quartz-powered Omega Constellation with a stainless steel case and original bracelet for sale
- Bracelet size limit: up to 6.7 inches
- Case diameter: 25.6mm
![[WTS] Dry or Sweet Manhattan? 2 Omega Constellation Manhattan Day-Dates - The Wallet Friendly Integrated Bracelet Choice!](https://preview.redd.it/qp17xeagdipg1.jpg?width=640&crop=smart&auto=webp&s=c60e572d64154b2429e51fdb8116497e04cc6ba5)
Dry or Sweet Manhattan? 2 Omega Constellation Manhattan Day-Dates - The Wallet Friendly Integrated Bracelet Choice!
The Omega Constellation Manhattan Day-Date is a fantastic choice for those looking for an integrated bracelet watch. Designed by Carol Didisheim in 1982, this model features a crisp white dial and gold dot markers. The case measures 33MM and has an oversized bezel.
- Condition: Pre-owned, unpolished with patina
- Case size: 33MM
- Bezel size: oversized
- Bracelet length: stainless: up to 7.5 inches, two tone: just over 7 inches
![[WTS] PRICE REDUCED! 1966 OMEGA CONSTELLATION](https://preview.redd.it/mmvfl5sxchpg1.jpg?width=640&crop=smart&auto=webp&s=6e7d29c8ecc262c0210d19265949363cf18aaec0)
PRICE REDUCED! 1966 OMEGA CONSTELLATION
A modern vintage grail, a 1966 Omega Constellation featuring 'dog leg' lugs and a cross hair dial in original condition. The silver dial remains in superb condition.
- Condition: UNPOLISHED/UNTOUCHED with minor scratches on the case and caseback
- Case Diameter: 34mm
- Case Length: 42.7mm
- Movement Type: Automatic wind
![[WTS] 60s Omega Constellation Pie Gold Cap Pan Ref. 168.005 | Dog-leg Lugs | All Original | $2450 (SERVICED)](https://preview.redd.it/xjkcirjmtepg1.jpg?width=640&crop=smart&auto=webp&s=69e4b63fd7b0205776fca9f071ffe0da05ece4b7)
60s Omega Constellation Pie Gold Cap Pan Ref. 168.005 | Dog-leg Lugs | All Original | $2450 (SERVICED)
This vintage Omega Constellation has a design icon 'Pie Pan' dial with faceted edges and bold applied markers, along with twisted dog-leg lugs and chronometer-rated movement.
- Condition: Serviced, good condition with some light spotting on the dial
- Movement Rating: Chronometer-rated
- Case Condition: Very good condition
- Diameter: 34mm (diameter)