Omega Aqua Terra Seamaster Aqua Terra 150M Master Co-Axial 38.5 Stainless Steel / Red Gold / Silver

Reference 231.23.39.21.02.001

Omega Seamaster Aqua Terra 150M Master Co-Axial 38.5 Stainless Steel / Red Gold / Silver

About this watch

The Omega Seamaster Aqua Terra 150M Master Co-Axial is a masterpiece of luxury watchmaking, combining elegance with functionality in a single timepiece. Crafted from a blend of stainless steel and red gold, this stunning watch exudes opulence without being gaudy. The silver-toned dial features stick and dot indexes paired with arrow-shaped hands, providing excellent legibility and making it an ideal companion for both casual and formal occasions. At the heart of this timepiece is the in-house Omega caliber 8500, a marvel of engineering known for its reliability and precision. With a power reserve of 60 hours, you don't have to worry about winding it every day. The Co-Axial escapement improves accuracy and reduces friction between parts, making it a true chronometer. This watch is perfect for professionals who need a timepiece that transitions seamlessly from the office to a dinner date, as well as collectors who appreciate Omega's rich history and innovation.

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Key Features

Omega caliber 8500 movement
Stainless Steel / Red Gold case material
Sapphire crystal glass
150 meters water resistance
38.5 mm diameter
Co-Axial escapement for improved accuracy
60 hour power reserve

Specifications

Brand

Omega

Family

Aqua Terra

Model

Seamaster Aqua Terra 150M Master Co-Axial 38.5 Stainless Steel / Red Gold / Silver

Reference

231.23.39.21.02.001

Movement

8500

Movement Features

Hours, Minutes, Seconds
Date
Chronometer, Co-Axial Escapement

Case

38.5mm

Dial Color

Silver

Crystal

Sapphire

Water Resistance

150

Current Listings

Omega Aqua Terra 231.10.39.21.01.001 Cal 8500 38.5mm Black Teak - $2,890

Omega - 231.10.39 Cal 8500 · $2,890

This Omega Aqua Terra 231.10.39 Cal 8500 features a 38.5mm steel case with a Calibre OMEGA 8500 movement.

Condition: Great condition, minimal marks present
Case size: 38.5mm diameter
Movement: Calibre OMEGA 8500
Bracelet material: Steel

Posted at

May 5, 2026, 10:07 PM

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Omega Aqua Terra 231.10.39 Cal 8500 38.5 mm Master Co-Axial Box and Papers - $3,250

Omega - 231.10.39.21.02.002 · $3,250

Up for sale is my Omega Aqua Terra 231.10.39 Cal 8500 watch in great condition. It measures 39mm with a steel case on original Omega steel bracelet.

Condition: Great condition, some minor marks on the case and caseback
Case size: 39mm
Movement: Calibre OMEGA 8500
Bracelet material: Steel

Posted at

May 5, 2026, 10:04 PM

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Omega Aqua Terra 2503.80 - 39mm - Blue Automatic

Omega - 2503.80 · $2,750

This Omega Aqua Terra Blue Automatic is a 39mm watch-only example in good condition.

Condition: Pre-owned, clean condition with light wear throughout
Size: 39mm diameter

Posted at

May 5, 2026, 5:37 PM

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2018 Omega Seamaster Aqua Terra 150M 38.5mm Teak - 231.10.39.21.02.001 - Box & Papers

Omega - 231.10.39.21.02.001 · $3,100

Aqua Terra in perfect size, suitable for everyday wear with any outfit.

Condition: Excellent condition
Case size: 38.5mm diameter

Posted at

May 5, 2026, 3:36 PM

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Omega Aqua Terra 2503.33.00 (39mm)

Omega - 2503.33.00 · $2,600

Up for sale is my Omega Aqua Terra that has been worn sparingly by me since I bought it on here back in 2022. It received a full service by Omega in May 2023.

Condition: Excellent, with normal signs of wear
Size: 39mm diameter
Hands included: 2 sets (blue original and silver replacement)
Original box: not included

Posted at

May 5, 2026, 12:14 PM

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