Omega De Ville De Ville Byzantium Co-Axial 33.4 Co-Axial Stainless Steel / Black

Reference 7801.50.31

About this watch

The Omega De Ville 7801.50.31 Byzantium Co-Axial watch is a masterpiece of engineering, featuring the remarkable Omega Caliber 2500 automatic movement with co-axial escapement. This innovative system reduces friction between components, enhancing timekeeping precision and longevity. The sleek square shape and bold black dial make a statement, while the stainless steel case provides durability and a luxurious shine. With a water resistance of 50 meters and a comfortable fit, this watch is perfect for both formal events and casual outings. It's an investment that will elevate your style and retain its value over time.
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MSRP: $3,650
Market Price: $1,795

Key Features

  • Omega Caliber 2500 automatic movement with co-axial escapement
  • Sleek square shape and bold black dial
  • Durable stainless steel case with luxurious shine
  • Water resistance of 50 meters
  • Comfortable fit and lightweight design
  • Scratch-resistant sapphire crystal
  • Certified chronometer for precision timekeeping

Specifications

Brand
Omega
Family
De Ville
Model
De Ville Byzantium Co-Axial 33.4 Co-Axial Stainless Steel / Black
Reference
7801.50.31
Movement
2500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Co-Axial Escapement, Chronometer
Case
Stainless Steel 33.4mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Omega De Ville Tonneau ($350)

Omega De Ville Tonneau ($350)

This vintage Omega De Ville brings mid-century refinement in a compact and sharply styled package. Housed in a tonneau-shaped case measuring 26x34mm, this elegant dress watch is gold plated in 20-micron finish.

  • Condition: Excellent overall vintage condition, apart from a small crack in the case around the 9 marker
  • Case size: 26x34mm
  • Movement type: Manual wind
Posted at
Jul 3, 2025, 12:07 PM
Active
[WTS] Omega De Ville Disco Volante ($350)

Omega De Ville Disco Volante ($350)

Omega - 166.094 · $350
A boldly futuristic vintage Omega De Ville Ref. 166.094, a standout example of Omega’s 1970s design experimentation, with a wide circular Disco Volante case and minimalist dial.

  • Condition: Excellent vintage condition
  • Movement: Manual Wind
  • Case material: Stainless steel
  • Diameter: 30mm
Posted at
Jul 3, 2025, 12:04 PM
Active
Omega De Ville TV Automatic Vintage $699 Shipped (SERVICED)

Omega De Ville TV Automatic Vintage $699 Shipped (SERVICED)

Omega - 166.075 · $699.007
A rare Omega De Ville vintage watch in great condition. The build quality is very high end overall, with a silver satin brush finished stunning sunburst dial and raised baton indexes.

  • Condition: Great condition
  • Case size: 33.5 mm (w/crown)
  • Lug to lug size: 40 mm
  • Case thickness: 9 mm
Posted at
Jul 3, 2025, 2:24 AM
Active
[WTS] Omega De Ville TV Automatic Vintage $699 Shipped (SERVICED)

Omega De Ville TV Automatic Vintage $699 Shipped (SERVICED)

Omega - 166.075 · $699
A rare Omega De Ville vintage watch with a silver satin brush finished sunburst dial and robust TV shaped square case, showcasing high-end build quality.

  • Condition: Great condition, serviced movement
  • Case size: 33.5mm diameter
  • Lug to lug size: 40mm
  • Case thickness: 9mm
Posted at
Jul 3, 2025, 2:22 AM
Active
[WTS] Omega De Ville Date 795.0897.2 Gold Plated Ladies Watch $250

Omega De Ville Date 795.0897.2 Gold Plated Ladies Watch $250

Omega - 795.0897.2 · $250
This Omega De Ville Date is a ladies' watch featuring a gold-plated case and band. It has a quartz movement and measures 27mm in width without the crown.

  • Condition: Excellent, with little wear and marks
  • Movement: Quartz
  • Case Material: Gold Plated / Stainless steel
  • Band Type: Gold Plated / Stainless steel
Posted at
Jul 2, 2025, 8:47 AM
Active
[WTS] 37.5mm Omega De Ville Co-Axial, Stepped Lugs w/Cal 2500 Bravo  (full set)

37.5mm Omega De Ville Co-Axial, Stepped Lugs w/Cal 2500 Bravo (full set)

Omega - De Ville Co-Axial · $1,950
This Omega De Ville Co-Axial Chronometer features a stunning stepped case design with great proportions, one of the earliest Co-Axial movements (Cal 2500), and a sunburst grey dial with blue seconds hand.

  • Condition: Very good condition, normal wear consistent with age
  • Case size: 37.5mm
  • Case material: Stainless steel
  • Case thickness: 9.5mm
Posted at
Jun 30, 2025, 9:44 PM
Active
[WTS] Excellent OMEGA De Ville 191.0190 Cal 1377 Unisex Gold Plated  191.0190  Watch $375 SALE

Excellent OMEGA De Ville 191.0190 Cal 1377 Unisex Gold Plated 191.0190 Watch $375 SALE

Omega - 191.0190 · $375
This Omega De Ville watch features a quartz movement and is made of gold-plated stainless steel.

  • Condition: Excellent, with some wear and minimal marks
  • Case material: Gold Plated Stainless Steel
  • Band size: 19 cm total length
  • Movement: Quartz 1377
Posted at
Jun 29, 2025, 10:06 PM
Active