Omega Aqua Terra Seamaster Aqua Terra 150M Master Co-Axial 38.5 Stainless Steel / Yellow Gold / MOP / Bracelet

Reference 231.20.39.21.55.004

About this watch

The Omega Seamaster Aqua Terra 150M Master Co-Axial is a masterpiece of luxury watchmaking, boasting an exquisite Mother of Pearl dial and a durable combination of stainless steel and yellow gold. At the heart of this timepiece lies the Omega caliber 8500 movement, certified as a Master Co-Axial Chronometer and featuring a power reserve of up to 60 hours. With its stunning design and impressive technical specifications, this watch stands out as a prime example of Omega's craftsmanship. Whether you're in a formal setting or enjoying casual outings, this watch is suitable for any occasion, thanks to its versatility and excellent water resistance of 150 meters.
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Key Features

  • Omega caliber 8500 movement
  • Master Co-Axial Chronometer certification
  • 60-hour power reserve
  • Exquisite Mother of Pearl dial
  • Durable stainless steel and yellow gold materials
  • Excellent water resistance (150 meters)
  • Versatile design suitable for any occasion

Specifications

Brand
Omega
Family
Aqua Terra
Model
Seamaster Aqua Terra 150M Master Co-Axial 38.5 Stainless Steel / Yellow Gold / MOP / Bracelet
Reference
231.20.39.21.55.004
Movement
8500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
38.5mm
Dial Color
White
Crystal
Sapphire
Water Resistance
150

Current Listings

[WTS] Omega Seamaster Aqua Terra 150M 38.5mm White Teak “Skyfall” Dial | Ref. 231.10.39.21.02.001| Full Set | Mint Condition

Omega Seamaster Aqua Terra 150M 38.5mm White Teak “Skyfall” Dial | Ref. 231.10.39.21.02.001| Full Set | Mint Condition

This Omega Seamaster Aqua Terra 150M features a White Teak dial and is powered by the Co-Axial Calibre 8500 automatic movement.

  • Condition: Excellent
  • Case size: 38.5mm diameter
  • Strap material: stainless steel
  • Movement: Omega Co-Axial Calibre 8500 (automatic)
Posted at
May 17, 2026, 1:51 PM
Active
[WTS] Omega Seamaster Aqua Terra 150M – Bond Blue – 38.5mm

Omega Seamaster Aqua Terra 150M – Bond Blue – 38.5mm

Omega - 23110392103002 · $3,850
A versatile Omega Seamaster Aqua Terra 150M in Bond Blue, featuring a stainless steel case and blue teak pattern dial.

  • Condition: Excellent overall condition
  • Case size: 38.5mm diameter
  • Water resistance: 150m depth rating
Posted at
May 17, 2026, 1:36 PM
Active
[WTS] Omega Seamaster Aqua Terra Railmaster 2803.52.31 Co-Axial Chronometer 39.2mm | Box & Papers, Fresh Service | $2,999 Shipped

Omega Seamaster Aqua Terra Railmaster 2803.52.31 Co-Axial Chronometer 39.2mm | Box & Papers, Fresh Service | $2,999 Shipped

Omega - 2803.52.31 · $2,999
Early modern Railmaster from the mid-2000s with a 39.2mm case and no-date black dial, powered by an Omega Cal. 2403 Co-Axial Chronometer.

  • Condition: very good overall condition
  • Case size: 39.2mm
  • Lug-to-lug: 46mm
  • Thickness: 11mm
Posted at
May 17, 2026, 10:21 AM
Active
[WTS] Omega Seamaster Aqua Terra..Silver..41mm

Omega Seamaster Aqua Terra..Silver..41mm

This Omega Seamaster Aqua Terra is a silver watch with a 41mm diameter.

  • Size: 41mm diameter
  • Shipping: Fedex with insurance
Posted at
May 16, 2026, 12:21 PM
Active
[WTS] Omega Aqua Terra OEM Black Rubber Strap. With end link and deployant clasp.

Omega Aqua Terra OEM Black Rubber Strap. With end link and deployant clasp.

Omega - Aquaterra 41mm · $380
For sale is an Omega Aquaterra 41mm with OEM black rubber strap and accessories.

  • Condition: Very lightly worn
  • Lug Size: 20mm
  • Strap Type: Black Rubber Strap
Posted at
May 16, 2026, 11:13 AM
Active
[WTS] price reduction! New old stock unworn Omega Aqua Terra 231.10.39.21.01.002

price reduction! New old stock unworn Omega Aqua Terra 231.10.39.21.01.002

This is a brand new, discontinued Omega Aqua Terra with a black vertical teak dial and stainless steel case.

  • Condition: Brand New In Box (BNIB)
  • Case size: 38.5mm
  • Movement: Master co axial 8500
Posted at
May 16, 2026, 12:14 AM
Active
[WTS] Omega Seamaster Aqua Terra Black Teak Full Set

Omega Seamaster Aqua Terra Black Teak Full Set

  • Shipping cost included: shipped and insured
Posted at
May 15, 2026, 10:17 PM
Active
[WTS] 2023 Omega Seamaster Aqua Terra - 231.10.39.21.02.001 - Box and Papers - $3,495 Shipped ✈️

2023 Omega Seamaster Aqua Terra - 231.10.39.21.02.001 - Box and Papers - $3,495 Shipped ✈️

This Omega Seamaster Aqua Terra features a white dial and comes with the red Omega box, warranty card, pictogram card, and manual.

  • Condition: Very clean pre-owned example in great overall condition with very minimal wear
  • Year: 2023
  • Size: 38.5mm diameter
  • Features: white dial
Posted at
May 15, 2026, 10:12 PM
Active
[WTS] Omega Seamaster Aqua Terra Black Teak 38.5mm - 231.10.39.21.01.001 - $3,250 Shipped ✈️

Omega Seamaster Aqua Terra Black Teak 38.5mm - 231.10.39.21.01.001 - $3,250 Shipped ✈️

This Omega Seamaster Aqua Terra features a black teak dial and is a clean pre-owned example with minimal wear throughout. It's an excellent everyday wearer that fits into any collection.

  • Condition: pre-owned in great overall condition
  • Size: 38.5mm diameter
  • Dial color: black teak
Posted at
May 15, 2026, 9:49 PM
Active