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

Reference 231.13.39.21.55.001

About this watch

Welcome, watch enthusiasts! If you’re on the lookout for a watch that combines elegance, durability, and precision, then you’re in the right place. Today, we’re diving deep into the stunning world of the Omega Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / MOP. With a reference number of 231.13.39.21.55.001, this timepiece is a true gem. The brand has a rich legacy of precision timekeeping, and they’ve even been to the moon! So, you can bet that their timepieces are engineered with meticulous care. The Seamaster Aqua Terra family is all about versatility. Whether you’re dressing up for a gala or just enjoying a casual day out, this collection has something for everyone. The first thing you’ll notice about the Aqua Terra is its breathtaking Mother of Pearl (MOP) dial. It’s like wearing a piece of the ocean on your wrist! The iridescent surface catches light beautifully, creating a mesmerizing display that changes with every angle. With a diameter of 38.50 mm, the watch strikes a perfect balance between formality and casual wear. It’s large enough to make a statement yet not so bulky that it becomes cumbersome. The stainless steel case is polished to perfection, giving it a sleek and shiny appearance. Plus, the open case back is a delightful touch, inviting you to admire the intricate movement inside. This watch isn’t just a timepiece; it’s a conversation starter. With a water resistance of 150 meters, the Aqua Terra is versatile enough for both the beach and the boardroom. Whether you’re swimming, snorkeling, or just caught in an unexpected rainstorm, you don’t have to worry about water damage. Omega really thought of everything! The stainless steel bracelet is both sturdy and comfortable. It features a classic design with a secure clasp that ensures it stays safely on your wrist. The brushed and polished links add a touch of sophistication, making it suitable for any occasion. Plus, it’s adjustable, so you can get the perfect fit. Wearing the Aqua Terra feels like a dream. The weight is just right—not too heavy or too light. You’ll forget you have it on, and yet it draws compliments wherever you go. It’s the kind of watch that makes you feel confident, whether you’re on a business call or enjoying a night out. With its stunning design, robust movement, and unbeatable versatility, this watch is a worthy addition to any collection.
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MSRP: $6,600
Market Price: $3,187

Key Features

  • Omega caliber 8500 movement
  • 38.50 mm stainless steel case
  • 150 meters water resistance
  • Mother of Pearl dial
  • Stainless steel bracelet with secure clasp
  • Open case back for viewing movement
  • Chronometer certified for accuracy

Specifications

Brand
Omega
Family
Aqua Terra
Model
Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / MOP
Reference
231.13.39.21.55.001
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] Omega Seamaster Aqua Terra 150M Annual Calendar –Teak Dial – Discontinued|Ref: 231.13.39.22.01.001|Full Set – 2020 – Excellent Condition

Omega Seamaster Aqua Terra 150M Annual Calendar –Teak Dial – Discontinued|Ref: 231.13.39.22.01.001|Full Set – 2020 – Excellent Condition

A discontinued Omega Seamaster Aqua Terra 150M featuring an annual calendar complication and black teak dial, housed in a 38.5mm stainless steel case.

  • Condition: Excellent
  • Case diameter: 38.5mm
  • Water resistance: 150m
  • Movement: Calibre 8601 automatic
Posted at
Mar 19, 2026, 11:01 PM
Active
[WTS] Omega Aqua Terra Shades - 38mm Sandstone - 220.10.38.20.09.001 - Price Reduced!

Omega Aqua Terra Shades - 38mm Sandstone - 220.10.38.20.09.001 - Price Reduced!

This Omega Seamaster Aqua Terra Shades features a stunning dial and is running exceptionally well at +1 second/day.

  • Condition: lightly pre-owned with light, normal wear throughout
  • Size: 38mm diameter
  • Movement performance: +1 second/day, 300+ amplitude
Posted at
Mar 18, 2026, 5:26 PM
Active
[WTS] Omega 2504.50 36mm Black Dial Aqua Terra Watch Only $2,400

Omega 2504.50 36mm Black Dial Aqua Terra Watch Only $2,400

Omega - 2504.50 · $2,400
Selling my Omega Aqua Terra Watch Only, 36mm black dial.

  • Condition: pre-owned, polished
  • Case size: 36mm diameter
  • Bracelet length: 18cm
Posted at
Mar 18, 2026, 1:54 PM
Active
[WTS] Omega Seamaster Aqua Terra Day-Date 231.10.42.22.01.001 – Full Kit – $3250

Omega Seamaster Aqua Terra Day-Date 231.10.42.22.01.001 – Full Kit – $3250

The Omega Seamaster Aqua Terra Day-Date features a black teak-pattern dial with day window at 12 and date at 6. It has a 41.5mm stainless steel case with Calibre 8602 Co-Axial movement.

  • Condition: Overall very good condition
  • Case size: 41.5mm
  • Movement: Calibre 8602 Co-Axial automatic movement
  • Water resistance: 150m / 500ft
Posted at
Mar 16, 2026, 4:23 PM
Active
[WTS] Omega Seamaster Aqua Terra 150m - Grey Dial - 41mm - 220.12.41.21.02.002

Omega Seamaster Aqua Terra 150m - Grey Dial - 41mm - 220.12.41.21.02.002

Omega Seamaster Aqua Terra 150m features a grey dial and a 41mm case.

  • Condition: Fantastic condition with minor hairlines
  • Depth rating: 150m
  • Diameter: 41mm
Posted at
Mar 16, 2026, 11:11 AM
Active
[WTS] Omega Seamaster Aqua Terra – 'Blue Wave’ – Gold Accents – Box & Papers

Omega Seamaster Aqua Terra – 'Blue Wave’ – Gold Accents – Box & Papers

Omega - 23110422103006 · $4,950
A striking Aqua Terra released for a very short period in limited production, featuring a blue dial with wave pattern and 18K yellow gold details.

  • Condition: Excellent all-around condition
  • Case size: 41.5mm
  • Water resistance: 150M / 15 bar
  • Movement: Omega Master Co-Axial calibre 8500
Posted at
Mar 15, 2026, 4:11 PM
Active
[WTS] Omega Seamaster Aqua Terra Worldtimer “Summer Blue”

Omega Seamaster Aqua Terra Worldtimer “Summer Blue”

This Omega Seamaster Aqua Terra Worldtimer features a stunning 'Summer Blue' dial with a laser-ablated topographic map of the continents, powered by the Omega Co-Axial Master Chronometer Caliber 8938. This watch allows you to track time across the globe while maintaining everyday wearability.

  • Condition: Brand new old stock and unworn
  • Case size: 43mm
  • Movement caliber: Omega Co-Axial Master Chronometer Caliber 8938
  • Complications: Worldtimer
Posted at
Mar 15, 2026, 1:55 PM
Active
[WTS] Omega Seamaster Aqua Terra 150m 38mm. Ref 220.12.38.20.02.001

Omega Seamaster Aqua Terra 150m 38mm. Ref 220.12.38.20.02.001

Selling an Omega Seamaster Aqua Terra 150m 38mm, under warranty until July 2028.

  • Condition: Minor wear on the sides
  • Water Resistance: 150m
  • Warranty: until July 2028
Posted at
Mar 15, 2026, 10:39 AM
Active
[WTS] Omega Aqua Terra OEM blue rubber strap with deployant and end links

Omega Aqua Terra OEM blue rubber strap with deployant and end links

This Omega Aqua Terra is a 41mm watch featuring a teak dial, and comes with an OEM blue rubber strap and deployant.

  • Condition: near mint
  • Strap Type: blue rubber
  • Deployant: yes
  • End Links: yes
Posted at
Mar 14, 2026, 3:43 PM
Active