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.
Buy Now on Jomashop
This is an affiliate link
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] Vintage Omega Seamaster De Ville Linen Dial

Vintage Omega Seamaster De Ville Linen Dial

A vintage Omega Seamaster De Ville features a linen dial and has been recently serviced.

  • Condition: Pre-owned, serviced
  • Crystal condition: not specified
  • Box and papers: none mentioned
Posted at
Mar 28, 2026, 6:07 PM
Active
[WTS] 1960s Omega Seamaster De Ville 166.020 cal.562 | Great Condition (Serviced) | $1200

1960s Omega Seamaster De Ville 166.020 cal.562 | Great Condition (Serviced) | $1200

Omega - 166.020 cal.562 · $1,200
This is a classic mid-1960s Omega Seamaster De Ville with a crosshair dial and an automatic movement. The watch features a compact, easy-to-wear case design with a warm vintage tone.

  • Condition: Great serviced condition
  • Case dimensions: 34-34.5mm diameter, 40mm lug-to-lug, 18mm lug width, 10-11mm thickness
  • Dial finish: champagne/silver sunburst
  • Movement features: 24 jewels, ~42-hour power reserve, semi-quickset date
Posted at
Mar 23, 2026, 11:59 PM
Active
[WTS] Omega De Ville Prestige 434.13.41.20.02.001 – Silver Dial, Master Chronometer – Full Set

Omega De Ville Prestige 434.13.41.20.02.001 – Silver Dial, Master Chronometer – Full Set

A clean, classic dress piece featuring Omega's Co-Axial Master Chronometer movement, perfect for formal or office wear.

  • Condition: Excellent, light signs of wear
  • Case size: 41mm
  • Movement: Omega Co-Axial Master Chronometer Cal. 8800
  • Dial: Silver with Roman numerals, small seconds, date at 6
Posted at
Mar 20, 2026, 7:41 PM
Active
Omega 424.10.40.20.02.001 De Ville Prestige Co-Axial 39.5MM Silver Box & Papers

Omega 424.10.40.20.02.001 De Ville Prestige Co-Axial 39.5MM Silver Box & Papers

This Omega De Ville Prestige Co-Axial is a vintage watch featuring a silver dial, housed in a 39.5MM case.

  • Condition: Excellent
  • Case size: 39.5MM diameter
  • Movement: Co-Axial
Posted at
Mar 28, 2025, 11:33 PM
Active
Omega De Ville Prestige 39.5mm 424.13.40.20.02.003 Mint Complete

Omega De Ville Prestige 39.5mm 424.13.40.20.02.003 Mint Complete

This Omega De Ville Prestige is a 2023 dated set in great shape, perfect for those looking for a complete and mint condition watch.

  • Condition: Mint
  • Diameter: 39.5mm
  • Year: 2023
Posted at
Mar 27, 2025, 3:02 PM
Active
Omega De Ville Prestige �Jumping Hour� 18K Gold Automatic Ref. 4653.31

Omega De Ville Prestige �Jumping Hour� 18K Gold Automatic Ref. 4653.31

Omega - 4653.31 · $6,760
Omega De Ville Prestige Jumping Hour in 18K gold features a mechanical automatic movement and comes in a men's size of 36 x 31 mm.

  • Condition: 90%
  • Case Material: 18K Yellow Gold
  • Diameter: 36mm
  • Thickness: 31mm
Posted at
Mar 1, 2025, 10:30 AM
Active
Omega De Ville Prestige Chronograph Stainless Steel Ref 45403100

Omega De Ville Prestige Chronograph Stainless Steel Ref 45403100

Omega - 45403100 · $1,820
This Omega De Ville Prestige Chronograph features a mechanical manual movement, stainless steel case, and chronograph function.

  • Condition: 90%
  • Movement caliber: 861
  • Case size: 36mm
  • Case material: Stainless Steel
Posted at
Feb 13, 2025, 11:16 AM
Active