Omega Seamaster Seamaster Master Co-Axial 39.5 Swiss Edition Stainless Steel / Silver / Alligator

Reference 511.13.40.20.06.002

About this watch

The Omega Seamaster Master Co-Axial 39.5 Swiss Edition is a masterpiece of luxury watchmaking, blending traditional craftsmanship with cutting-edge technology. This stunning timepiece boasts a gradient grey dial with stick and dot indexes, feuille hands, and a round shape that exudes elegance. The movement powering this watch is the impressive Omega caliber 8800, featuring a self-winding mechanism with a Co-Axial escapement for precision and longevity. Master Chronometer certification ensures accuracy and performance under various conditions, while the power reserve of 55 hours allows you to take it off for extended periods without worrying about winding. The comfortable alligator leather strap adds a luxurious touch, making this watch perfect for daily wear or special occasions. With its exceptional timekeeping precision, date function, and water resistance rating of 60 meters, the Seamaster Master Co-Axial is an investment piece that offers great value for those looking to expand their luxury watch collection. Its elegant design and advanced movement make it a standout piece in Omega's impressive lineup.
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Key Features

  • Gradient grey dial
  • Omega caliber 8800 self-winding movement with Co-Axial escapement
  • Master Chronometer certification for accuracy
  • 55-hour power reserve
  • Comfortable alligator leather strap
  • Water resistance rating of 60 meters
  • Date function

Specifications

Brand
Omega
Family
Seamaster
Model
Seamaster Master Co-Axial 39.5 Swiss Edition Stainless Steel / Silver / Alligator
Reference
511.13.40.20.06.002
Movement
8800
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 39.5mm
Dial Color
Grey
Crystal
Sapphire
Water Resistance
60

Current Listings

[WTS] [Freshly Serviced Feb 2026] Rare Japan Limited Omega Seamaster 120M Ref. 2501.83 Blue "Explorer" Dial

[Freshly Serviced Feb 2026] Rare Japan Limited Omega Seamaster 120M Ref. 2501.83 Blue "Explorer" Dial

Omega - 2501.83 · $1,999
This Omega Seamaster 120M features a rare Japanese Domestic Market exclusive 'explorer' blue sunburst dial, with a clean and lumed face, and good condition case and bracelet.

  • Condition: Excellent
  • Year Of Manufacture: approximately 2006
  • Water Resistance: 5 bar (tested on Feb 2nd 2026)
  • Bracelet Size: up to 17.5cm
Posted at
Feb 6, 2026, 2:57 AM
Active
[WTS] 2011 Omega Seamaster 300M 2123.04 - $2,399

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Omega - 2123.04 · $2,399
A 2011 Omega Seamaster Diver 300M Quartz with a stainless steel case, black dial, and quartz movement. It features a domed sapphire crystal and is water-resistant up to 1000 feet.

  • Condition: Great condition overall with light wear consistent with careful use.
  • Case diameter: 41mm
  • Case material: Stainless steel
  • Dial color: Black
Posted at
Feb 5, 2026, 10:33 PM
Active
[WTS] Omega Seamaster Diver 300M, 212.32.41.20.04.001, Limited Edition 007 Commander’s Watch, 2018

Omega Seamaster Diver 300M, 212.32.41.20.04.001, Limited Edition 007 Commander’s Watch, 2018

  • Limited edition: 007 Commander's Watch
  • Year: 2018
  • Note: Additional Details
Posted at
Feb 5, 2026, 9:23 PM
Active
[WTS] Omega Seamaster Professional 41mm 300m ref. 2531.80 Automatic full set box and card 2004

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Omega - 2531.80 · $3,550
The Omega Seamaster Professional 41mm 300m is a neo-vintage classic with a rich maritime history, featuring a marine blue insert and crimson red tip seconds hand. It's powered by the Omega cal. 1120 and has a helium escape valve.

  • Condition: Visible wear and polish
  • Case size: 41mm
  • Case thickness: 11.9mm
  • Lug width: 20mm
Posted at
Feb 5, 2026, 8:31 PM
Active
[WTS] Omega Seamaster Aqua Terra Day Date, Blue dial.

Omega Seamaster Aqua Terra Day Date, Blue dial.

This Omega Seamaster Aqua Terra Day Date features a blue dial and is one of the seller's daily wear pieces. It comes with original box, strap, and clasp.

  • Condition: pre-owned with minor wear (micro hairline)
  • Original Box: true
  • Strap Condition: original
  • Case Size: 40mm diameter
Posted at
Feb 5, 2026, 8:21 PM
Active
[WTS] 2017 OMEGA Seamaster Railmaster 40MM Blue Dial Steel Bracelet

2017 OMEGA Seamaster Railmaster 40MM Blue Dial Steel Bracelet

A 2017 OMEGA Seamaster Railmaster with a blue dial, 40mm in size. The watch is in good condition despite some minor flaws.

  • Condition: Used, with minor cosmetic damage
  • Missing Items: International warranty card, inner box, outer box flap
Posted at
Feb 5, 2026, 8:19 PM
Active
[WTS] Omega Seamaster Heritage 300 234.30.41.21.01.001 Box Papers 🌊

Omega Seamaster Heritage 300 234.30.41.21.01.001 Box Papers 🌊

This vintage-inspired Omega Seamaster Heritage 300 is in very good condition, featuring desk diving marks on the clasp and minor fleabites between 9 and 12 on the inner bezel ring.

  • Condition: very good condition, desk diving marks on the clasp
Posted at
Feb 5, 2026, 5:01 PM
Active
[WTS] 2020 Omega Seamaster Planet Ocean 43.5mm Black Dial on Bracelet 215.30.44.21.01.002 B+P

2020 Omega Seamaster Planet Ocean 43.5mm Black Dial on Bracelet 215.30.44.21.01.002 B+P

This 2020 Omega Seamaster Planet Ocean is a rugged yet refined dive watch, featuring a sharp black dial and matching black and orange ceramic bezel that give it a clean, confident look on the wrist.

  • Condition: Good condition with some signs of wear
  • Case diameter: 43.5mm
  • Crystal: Sapphire
  • Bracelet material: Stainless Steel
Posted at
Feb 5, 2026, 4:47 PM
Active
[WTS] Omega Seamaster Diver - 41mm Black Wave - 212.30.41.20.01.002

Omega Seamaster Diver - 41mm Black Wave - 212.30.41.20.01.002

This Omega Seamaster Diver features a black dial and is available in a 41mm size, described as being in great condition.

  • Condition: Pre-owned with minor wear throughout
  • Size: 41mm diameter
  • Water Resistance: 30 bar/300m
Posted at
Feb 5, 2026, 12:41 PM
Active