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 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

Aqua Terra Day-Date watch featuring a black teak-pattern dial, day window at 12, and date at 6, with a stainless steel case and automatic Co-Axial movement.

  • Condition: Very good condition, with one small surface mark on the case side
  • Case size: 41.5mm
  • Water resistance: 150m / 500ft
  • Movement: Calibre 8602 Co-Axial automatic
Posted at
Mar 13, 2026, 9:49 PM
Active
[WTS] OMEGA Seamaster Aqua Terra Worldtimer "Summer Blue" Ref. 220.10.43.22.03.002 - ULTIMATE SET! 🔥$9,600🔥

OMEGA Seamaster Aqua Terra Worldtimer "Summer Blue" Ref. 220.10.43.22.03.002 - ULTIMATE SET! 🔥$9,600🔥

The OMEGA Seamaster Aqua Terra Worldtimer Ref. 220.10.43.22.03.002 is a sophisticated travel companion that puts the world on your wrist. Part of the 'Summer Blue' collection, it features a 43mm stainless steel case and a dial that captures the essence of a perfect day at sea.

  • Condition: VERY GOOD - Some light scratches on case and bracelet.
  • Case Size: 43mm
  • Bracelet Size: 7"
  • Box Papers: Yes
Posted at
Mar 13, 2026, 8:21 PM
Active
[WTS] OMEGA Seamaster Aqua Terra 150M Terracotta Ref. 220.10.38.20.13.003 - ULTIMATE SET! 🔥$6,100🔥

OMEGA Seamaster Aqua Terra 150M Terracotta Ref. 220.10.38.20.13.003 - ULTIMATE SET! 🔥$6,100🔥

The OMEGA Seamaster Aqua Terra Ref. 220.10.38.20.13.003 features a 38mm stainless steel case, Terracotta dial with rhodium-plated hands and indexes filled with white Super-LumiNova, and is powered by the Co-Axial Master Chronometer Calibre 8800.

  • Condition: UNWORN
  • Case size: 38mm
  • Bracelet links: pre-sized for a ~7" wrist
  • Contents: ULTIMATE SET, including box, papers, serial hang tag, spare links, shipping coffin, and digital copy of original purchase receipt
Posted at
Mar 13, 2026, 8:19 PM
Active
[WTS] Omega Seamaster Aqua Terra Annual Calendar 231.10.39.22.03.001 Full Set - priced to fly

Omega Seamaster Aqua Terra Annual Calendar 231.10.39.22.03.001 Full Set - priced to fly

This Omega Seamaster Aqua Terra features an Annual Calendar and Blue Dial, housed in a 38.5mm case.

  • Condition: excellent
  • Case size: 38.5mm
Posted at
Mar 13, 2026, 7:03 PM
Active
[WTS] Omega Seamaster Aqua Terra Chronograph GMT – Ref 231.10.43.52.06.001

Omega Seamaster Aqua Terra Chronograph GMT – Ref 231.10.43.52.06.001

This Omega Seamaster Aqua Terra Chronograph GMT is a clean and well-maintained example of the watch, with a full chronograph and GMT complication making it one of the more mechanically interesting configurations in the Aqua Terra line.

  • Condition: Very good
  • Complications: chronograph and GMT
  • Bracelet condition: well preserved
Posted at
Mar 13, 2026, 10:43 AM
Active
[WTS] Omega Aqua Terra 231.10.39 Cal 8500 39mm Grey Teak Dial- $2,590

Omega Aqua Terra 231.10.39 Cal 8500 39mm Grey Teak Dial- $2,590

This Omega Aqua Terra 231.10.39 Cal 8500 is a great condition watch with a 39mm steel case and original Omega steel bracelet, powered by the Calibre OMEGA 8500 movement.

  • Condition: Great condition with minimal marks on the case and bracelet
  • Case size: 39mm diameter
  • Movement: Calibre OMEGA 8500
  • Bracelet material: Steel
Posted at
Mar 12, 2026, 8:59 PM
Active
[WTS] Omega Seamaster Aqua Terra – James Bond SkyFall – 38.5mm – Box & Papers Set

Omega Seamaster Aqua Terra – James Bond SkyFall – 38.5mm – Box & Papers Set

This Omega Seamaster Aqua Terra 150M 'SKYFALL' features a 38.5mm stainless steel case, blue teak pattern dial, and an Omega Co-Axial 8500 calibre automatic movement with Si14 hairspring.

  • Case size: 38.5mm
  • Material: stainless steel
  • Bracelet material: stainless steel
Posted at
Mar 12, 2026, 4:24 PM
Active
[WTS] Omega Seamaster Aqua Terra Annual Calender 43mm

Omega Seamaster Aqua Terra Annual Calender 43mm

Omega - 231.10.43.52.001 · $10,500
  • Size: 43mm diameter
  • Water Resistance: 30m water resistance
Posted at
Mar 12, 2026, 1:36 PM
Active