Omega Seamaster Seamaster Master Co-Axial 39.5 Macau Edition Stainless Steel / Green / Alligator

Reference 511.13.40.20.10.001

About this watch

The Omega Seamaster Master Co-Axial 39.5 Macau Edition is a breathtaking timepiece that embodies everything we love about Omega. With its stunning green gradient dial, crafted from high-quality stainless steel, and protected by a scratch-resistant sapphire crystal, this watch is both modern and sophisticated. The Omega Caliber 8800 movement features innovative Co-Axial escapement, reducing friction and enhancing longevity. Certified by METAS, it's resistant to magnetic fields up to 15,000 gauss. This self-winding movement boasts an impressive 55-hour power reserve and 60 meters water resistance. Its ergonomic design makes it feel like a second skin, and the alligator leather strap adds a touch of elegance. Whether you're dressed in formal attire or casual wear, this watch is versatile enough for any occasion. With only 399 units available, its limited edition status adds to its allure, making it a collectible piece of art that tells a story.
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Key Features

  • Omega Caliber 8800 movement
  • Scratch-resistant sapphire crystal
  • Stainless steel case and strap
  • 60 meters water resistance
  • 55-hour power reserve
  • Co-Axial escapement
  • Limited edition with only 399 units

Specifications

Brand
Omega
Family
Seamaster
Model
Seamaster Master Co-Axial 39.5 Macau Edition Stainless Steel / Green / Alligator
Reference
511.13.40.20.10.001
Movement
8800
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 39.5mm
Dial Color
Green
Crystal
Sapphire
Water Resistance
60

Current Listings

[WTS] 2023 Omega Seamaster SMP300m Green Wave Dial “Seaweed” Reference 210.32.42.20.10.001 - Box and Papers

2023 Omega Seamaster SMP300m Green Wave Dial “Seaweed” Reference 210.32.42.20.10.001 - Box and Papers

2023 Omega Seamaster Diver SMP300M 42mm Green Wave Dial 'Seaweed' watch in excellent condition, running great and keeping time to spec.

  • Condition: Excellent
  • Case condition: Minimal signs of wear
  • Crystal condition: Clean and scratch-free
  • Water resistance: 300m
Posted at
May 13, 2026, 2:33 PM
Active
[WTS] 2026 Omega Seamaster 210.30.42.20.06.002 - Box and Cards

2026 Omega Seamaster 210.30.42.20.06.002 - Box and Cards

This is a unique Omega Seamaster reference with a brushed finish dial, measuring at 42mm in diameter.

  • Condition: lightly owned
  • Bracelet size: 42mm diameter
  • Material: stainless steel
  • Water resistance:
Posted at
May 13, 2026, 1:45 PM
Active
[WTS] Omega Seamaster Professional midsize Ref. 2552.80 | Great Unpolished Condition | $2100 (SERVICED)

Omega Seamaster Professional midsize Ref. 2552.80 | Great Unpolished Condition | $2100 (SERVICED)

Omega - 2552.80 · $2,100
This Omega Seamaster Professional midsize is a compact and balanced watch that's great for everyday wear.

  • Condition: Great condition
  • Bracelet Length: 17.8cm
  • Case Width: 36.25mm (excluding crown)
  • Lug To Lug: 44mm
Posted at
May 13, 2026, 1:00 PM
Active
[WTS] Omega Seamaster Planet Ocean 600M – 42mm Titanium – Mint Set

Omega Seamaster Planet Ocean 600M – 42mm Titanium – Mint Set

The Omega Seamaster Planet Ocean 600M features a titanium case and bracelet, blue ceramic bezel and dial, and an automatic chronometer movement.

  • Condition: Mint condition
  • Case size: 42mm
  • Water resistance: 2000ft / 600m
  • Movement: Omega Calibre 8500 automatic chronometer
Posted at
May 13, 2026, 12:51 PM
Active
[WTS] Omega Seamaster Calendar 2627 Goldcapped $990

Omega Seamaster Calendar 2627 Goldcapped $990

Omega - 2627 · $990
This Omega Seamaster Calendar is a beautiful goldcapped watch from 1952, featuring a stainless steel case with a 14k layer and an acrylic crystal. It has a bumper movement, dauphine hands, and a trapezoid date window at 6 o'clock.

  • Condition: great condition with signs of wear
  • Case dimensions: 35mm diameter, 41.5mm lug to lug, 18mm lug width
  • Movement: Omega cal. 355 bumper movement
  • Crown shape: bolier hat shaped with Omega logo
Posted at
May 13, 2026, 9:15 AM
Active
[WTS][US] Omega Seamaster Diver 300m - Blue Dial - 41mm - 212.30.41.20.03.001 - Full Set

[US] Omega Seamaster Diver 300m - Blue Dial - 41mm - 212.30.41.20.03.001 - Full Set

An Omega Seamaster Diver 300m in blue dial, 41mm size, and reference number 212.30.41.20.03.001 is up for sale.

  • Condition: Fantastic condition with minor hairlines on clasp, case, and bracelet
  • Case size: 41mm diameter
  • Depth rating: 300m
Posted at
May 13, 2026, 7:59 AM
Active
[WTS] Omega Seamaster Aqua Terra First Gen Quartz 36mm 2518.30 $1,450

Omega Seamaster Aqua Terra First Gen Quartz 36mm 2518.30 $1,450

Omega - 2518.30 · $1,450
Selling a first-generation Omega Seamaster Aqua Terra Quartz Watch with a 36mm case.

  • Condition: Very minimal signs of use, recently polished
  • 18.5cm: length of bracelet
Posted at
May 13, 2026, 4:23 AM
Active
[WTS] Omega Seamaster 212.30.36 Wave Dial Mid Size 36mm  - $1,790

Omega Seamaster 212.30.36 Wave Dial Mid Size 36mm - $1,790

The Omega Seamaster 212.30.36 is a 36mm automatic watch featuring the Omega Calibre 2500 movement.

  • Condition: Good condition for its age, minimal marks/hairlines on case and bracelet, some wear on bezel insert
  • Case Size: 36mm
  • Movement Type: Automatic
Posted at
May 13, 2026, 4:17 AM
Active
[WTS] Omega Seamaster Planet Ocean Orange 232.30.42 42mm - $3,350 - Reserved Post for u/3twellv

Omega Seamaster Planet Ocean Orange 232.30.42 42mm - $3,350 - Reserved Post for u/3twellv

This Omega Seamaster Planet Ocean Orange features a steel case and original Omega steel bracelet. It has a clean crystal and AR coating, and all functions are working well.

  • Condition: Excellent (8.8/10) - minimal marks/hairlines on case, bezel insert and bracelet
  • Case size: 42mm diameter
  • Bracelet type: Original Omega steel bracelet
  • Bezel material: Steel
Posted at
May 13, 2026, 3:59 AM
Active