Omega Aqua Terra Seamaster Aqua Terra 150M Master Co-Axial 38.5 Stainless Steel / Diamond / MOP

Reference 231.18.39.21.55.001

Omega Seamaster Aqua Terra 150M Master Co-Axial 38.5 Stainless Steel / Diamond / MOP

About this watch

The Omega Seamaster Aqua Terra 231.18.39.21.55.001 is a masterpiece of luxury watchmaking, featuring a stunning Mother of Pearl dial and exceptional movement with a 60-hour power reserve. Its durable stainless steel construction and water resistance up to 150 meters make it perfect for everyday wear. This versatile timepiece combines elegance and functionality, making it a solid contender in the world of luxury watches.
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MSRP: $16,000
Market Price: $5,140

Key Features

  • Omega caliber 8500 automatic movement
  • 60-hour power reserve
  • Water resistance up to 150 meters
  • Mother of Pearl dial with gem-set indexes
  • Durable stainless steel construction
  • Date function and hours, minutes, seconds display

Specifications

Brand
Omega
Family
Aqua Terra
Model
Seamaster Aqua Terra 150M Master Co-Axial 38.5 Stainless Steel / Diamond / MOP
Reference
231.18.39.21.55.001
Movement
8500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 38.5mm
Dial Color
White
Crystal
Sapphire
Water Resistance
150

Current Listings

[WTS] 2024 Omega Seamaster Aqua Terra Terracotta Shades 38m Red Dial on Bracelet 220.10.38.20.13.003 B+P

2024 Omega Seamaster Aqua Terra Terracotta Shades 38m Red Dial on Bracelet 220.10.38.20.13.003 B+P

Omega - 220.10.38.20.13.003 · $5,600
The Omega Seamaster Aqua Terra Shades 220.10.38.20.13.003 features a rich red terracotta dial on a 38mm stainless steel case, with a Master Chronometer movement delivering accuracy and reliability.

  • Condition: Mint condition, almost no signs of wear
  • Case Diameter: 38mm
  • Bezel Material: Stainless Steel
  • Dial Color: Red
Posted at
Apr 8, 2026, 12:47 PM
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[WTS] Omega Seamaster Aqua Terra 231.10.39.21.01.001 Black Teak 38.5mm - $3,290

Omega Seamaster Aqua Terra 231.10.39.21.01.001 Black Teak 38.5mm - $3,290

Omega - 231.10.39.21.01.001 · $3,290
Up for sale is my great condition Omega Seamaster Aqua Terra 231.10.39.21.01.001 with a steel case on original Omega steel bracelet.

  • Condition: very good for its age, minimal marks/hairlines on case, caseback, and bracelet
  • Movement: Omega Calibre 8500
  • Case size: 38.5mm diameter
  • Bracelet type: original Omega steel bracelet
Posted at
Apr 7, 2026, 9:27 PM
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[WTS] 2025 Omega Aqua Terra 150M 41mm 220.10.41.21.03.006

2025 Omega Aqua Terra 150M 41mm 220.10.41.21.03.006

Omega - 220.10.41.21.03.006 · $6,200
  • Year: 2025
  • Depth rating: 150m
  • Case size: 41mm
Posted at
Apr 7, 2026, 9:04 PM
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[WTS] Omega Seamaster Aqua Terra 150M 220.10.41.21.03.001 – Blue Teak Dial – VG – Box & Papers

Omega Seamaster Aqua Terra 150M 220.10.41.21.03.001 – Blue Teak Dial – VG – Box & Papers

Omega - 220.10.41.21.03.001 · $4,950
  • Condition: Very Good
  • Water Resistance: 150m
  • Power Reserve: ~60 hours
  • Case Size: 41mm diameter
Posted at
Apr 7, 2026, 2:24 PM
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[WTS] Omega Seamaster Aqua Terra 231.10.42.21.02.001 - Price Reduced!

Omega Seamaster Aqua Terra 231.10.42.21.02.001 - Price Reduced!

Omega - 231.10.42.21.02.001 · $2,895
This is a Watch-only example of the Omega Seamaster Aqua Terra in White Dial, model number 231.10.42.21.02.001, featuring a 41.5mm size and excellent condition.

  • Condition: Very clean pre-owned condition with light wear throughout.
  • Size: 41.5mm
Posted at
Apr 6, 2026, 6:21 PM
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[WTS] Black Dial Omega Seamaster Aqua Terra Box & Papers 38mm 220.10.38.20.01.001

Black Dial Omega Seamaster Aqua Terra Box & Papers 38mm 220.10.38.20.01.001

Omega - 220.10.38.20.01.001
Posted at
Apr 5, 2026, 11:30 PM
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[WTS] Omega Seamaster Aqua Terra 2503.33 - $2,650

Omega Seamaster Aqua Terra 2503.33 - $2,650

Omega - 2503.33 · $2,650
This Omega Seamaster Aqua Terra 2503.33 is a 39mm watch featuring an automatic movement and a steel case on an original Omega Steel bracelet.

  • Condition: Good condition with a conservative rating of 8.9/10
  • Movement: Omega 2500 automatic movement
  • Case size: 39mm diameter
  • Bracelet type: Original Omega Steel bracelet
Posted at
Apr 5, 2026, 10:42 PM
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[WTS] Omega Seamaster Aqua Terra 231.10.39 38.5mm Skyfall - $3,350

Omega Seamaster Aqua Terra 231.10.39 38.5mm Skyfall - $3,350

Omega - 231.10.39.21.03.001 · $3,350
Up for sale is a Omega Seamaster Aqua Terra 231.10.39.21.03.001 with an automatic movement and measuring at 38.5mm. It has a steel case on original Omega steel bracelet.

  • Condition: Very good condition for it's age (8.9/10)
  • Case size: 38.5mm diameter
  • Bracelet material: Steel
  • Movement: Automatic Omega Calibre 8500
Posted at
Apr 5, 2026, 10:38 PM
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[WTS] Omega Aqua Terra 231.10.39 Cal 8500 39mm - $2,690

Omega Aqua Terra 231.10.39 Cal 8500 39mm - $2,690

Omega - 231.10.39 Cal 8500 · $2,690
Up for sale is my Omega Aqua Terra 231.10.39 Cal 8500, a watch with a 39mm steel case on original Omega steel bracelet and an OMEGA 8500 movement.

  • Condition: Great condition, minor marks on the case and crystal
  • Case size: 39mm diameter
  • Movement: Calibre OMEGA 8500
  • Bracelet material: Steel
Posted at
Apr 5, 2026, 10:27 PM
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