Omega Railmaster Seamaster Aqua Terra 150M Co-Axial 39.2 Railmaster / Brown Alligator

Reference 2803.52.37

Omega Seamaster Aqua Terra 150M Co-Axial 39.2 Railmaster / Brown Alligator

About this watch

The Omega Seamaster Aqua Terra 150M Co-Axial 39.2 Railmaster is a masterclass in blending modernity with tradition, featuring an elegant stainless-steel case and black dial adorned with mixed indexes and arrow hands. This automatic movement boasts a power reserve of 48 hours, frequency of 25,200 vibrations per hour, and Co-Axial escapement that reduces friction for enhanced longevity. With its sapphire glass, robust construction, and water resistance of 150 meters, this watch is as functional as it is stylish. Whether you're swimming, snorkeling, or just dressing up, the Omega Seamaster Aqua Terra 150M Railmaster is an exceptional timepiece that exudes sophistication and adventure spirit. As a chronometer, it has undergone rigorous testing to ensure accuracy and reliability, making it a worthy investment for any watch enthusiast. With its timeless design, exceptional craftsmanship, and versatility in various settings, this watch stands out from the crowd. Experience the Omega difference with this remarkable timepiece.

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MSRP: $2,850

Market Price: $2,711

Key Features

Omega caliber 2403 automatic movement
Sapphire glass for enhanced durability
Water resistance of 150 meters
Co-Axial escapement for improved accuracy and longevity
Chronometer certified for precision and reliability
Stainless-steel case with elegant design
Black dial with mixed indexes and arrow hands

Specifications

Brand

Omega

Family

Railmaster

Model

Seamaster Aqua Terra 150M Co-Axial 39.2 Railmaster / Brown Alligator

Reference

2803.52.37

Movement

2403

Movement Features

Hours, Minutes, Seconds
Co-Axial Escapement, Chronometer

Case

Stainless Steel 39.2mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

150

Current Listings

Omega Seamaster Railmaster, Grey/Silver, 40mm (full set- box and papers)

Omega - Railmaster · $3,200

A sleek and sporty GADA watch that has a lot to offer under the hood. It's a stealth ultimate tool watch that cleans up nicely.

Condition: excellent, pre-owned with minor signs of wear
Case size: 40mm
Serial number available: true

Posted at

Apr 21, 2026, 12:25 AM

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Omega Seamaster Railmaster Grey Dial

Omega - 235.10.38.20.06.001 · $4,499

This Omega Railmaster has a 38mm steel case on a steel bracelet with a gray gradient dial, and includes a full set of accessories.

Condition: Excellent pre-owned condition
Case size: 38mm diameter
Bracelet material: steel
Dial color: gray gradient

Posted at

Apr 19, 2026, 4:38 PM

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Omega Railmaster 39mm 2503.52 for $2580 shipped!

Omega - 2503.52 · $2,580

The Omega Seamaster Railmaster 39mm delivers a simple design with its 3-6-9-12 markers and arrow indices, making it the ultimate everyday watch.

Condition: Satisfactory
Case Size: 39mm
Lug To Lug: 47mm
Movement Type: No Date Co-Axial Automatic

Posted at

Apr 19, 2026, 11:02 AM

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Omega Railmaster Denim Dial on Bracelet - Omega Travel Box & Extra Strap Included - $2475

Omega - Railmaster Denim Dial · $2,475

A versatile Omega Railmaster Denim Dial on a bracelet with 150M water resistance and a 40mm case size that wears well. The watch is in good condition with minor signs of wear.

Condition: Used, minimal wear
Case diameter: 40mm
Water resistance: 150m
Bracelet size: 7-7.25 inch

Posted at

Apr 19, 2026, 8:55 AM

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2022 OMEGA Seamaster Railmaster 40mm - 220.10.40.20.01.001 - Full Set

Omega - 220.10.40.20.01.001 · $3,100

A classic design by Omega, the Seamaster Railmaster 40mm features a vertical 'satination' pattern crosshair dial with fantastic lume, and comes as a full set from 2022.

Condition: Excellent pre-owned condition with minor visible wear throughout
Case Size: 40mm diameter
Movement: Omega 8806

Posted at

Apr 14, 2026, 8:32 PM

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Omega Railmaster Grey Dial on Staib Mesh Bracelet & OEM Clasp on Rubber Strap

Omega - 22010402006001 · $2,625

This Omega Railmaster is a rugged, anti-magnetic watch designed for everyday use. It features a grey brushed dial and a high-quality Staib mesh bracelet.

Bracelet Size Range: up to 7.5 inches loose
Movement Type: co-axial master chronometer

Posted at

Apr 13, 2026, 5:35 PM

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Omega Seamaster Railmaster 40mm[WTS]

Omega - Railmaster · $3,300

A great first watch for any enthusiast, stainless steel brushed bracelet and bezel and case. No dent nor dings.

Condition: Great condition
Bracelet length: 40mm diameter

Posted at

Apr 12, 2026, 12:50 AM

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Omega Railmaster 235.10.38.20.06.001 - under warranty until 2031

Omega - 235.10.38.20.06.001 · $4,499

This Omega Railmaster features a 38mm steel case on a steel bracelet with a gray gradient dial and has a warranty until 2031.

Condition: Excellent pre-owned condition
Case size: 38mm diameter
Bracelet material: steel
Dial color: gray gradient

Posted at

Apr 9, 2026, 9:54 AM

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Omega Seamaster Railmaster 39mm - 2503.52

Omega - 2503.52 · $2,995

This Omega Railmaster features a mechanical, self-winding movement (caliber 2403) with co-axial escapement, 39mm case diameter, and exhibition case back.

Condition: good, has light wear on bezel, bracelet, and clasp
Movement: caliber 2403
Case diameter: 39mm
Bracelet size compatible: up to 7.5 inch wrist

Posted at

Apr 8, 2026, 6:45 PM

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