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

Reference 2803.52.37

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

[WTS] Omega Railmaster 235.10.38.20.06.001 - under warranty until 2031

Omega Railmaster 235.10.38.20.06.001 - under warranty until 2031

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
Active
[WTS] Omega Seamaster Railmaster 39mm - 2503.52

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
Active
[WTS] Tudor Ranger 39 & Omega Railmaster; Gorgeous Field Watch Duo

Tudor Ranger 39 & Omega Railmaster; Gorgeous Field Watch Duo

Tudor - Ranger 39 · $2,450
A Tudor Ranger 39 and an Omega Railmaster field watch duo are being sold. The Tudor is in excellent condition, while the Omega has minor hairlines but a perfect crystal.

  • Condition: Excellent
  • Bracelet size range: 7.75"
  • Band type 1: OEM bracelet
  • Band type 2: Staib mesh bracelet
Posted at
Apr 6, 2026, 10:46 PM
Active
[WTS] Omega Railmaster 39mm 2503.52 for $2680 shipped!

Omega Railmaster 39mm 2503.52 for $2680 shipped!

Omega - 2503.52 · $2,680
The Omega Seamaster Railmaster 39mm 2503.52 is a simple design watch with a no-date co-axial movement, suitable for everyday wear.

  • Condition: Satisfactory, with signs of long-term usage
  • Movement: Omega Calibre 2403 No Date Co-Axial Automatic
  • Case dimensions: 39mm wide, 47mm lug to lug
  • Chips/scratches: case is chipped on the left side, light scratches and surface marks throughout case and bracelet, scratches on bezel and crystal
Posted at
Apr 4, 2026, 10:46 AM
Active
[WTS] Omega Railmaster 39mm – Full Set – $2,650

Omega Railmaster 39mm – Full Set – $2,650

Omega - Railmaster 39mm · $2,650
A great everyday Omega Railmaster 39mm in excellent condition, perfect for casual wear due to its clean and understated design.

  • Condition: Overall very good with minor lugs finish issue
  • Lug finish: brushed
  • Issue description: slight bleeding from previous polish
Posted at
Mar 30, 2026, 1:43 PM
Active
Omega Railmaster  - 220.10.40.20.03.001 - Blue - Steel - 40mm - Mint

Omega Railmaster - 220.10.40.20.03.001 - Blue - Steel - 40mm - Mint

This Omega Railmaster is a pre-owned, mint condition watch with a blue dial and stainless steel case. It has a 40mm diameter and features an automatic movement.

  • Condition: Pre-Owned - Mint
  • Case Size: 40mm diameter
  • Bracelet Type: Stainless Steel
  • Movement Type: Automatic
Posted at
Mar 10, 2025, 12:58 AM
Active
NO TRADES:  Omega '57 Trilogy Railmaster.      $5030

NO TRADES: Omega '57 Trilogy Railmaster. $5030

A brand new Omega '57 Trilogy Railmaster purchased in September 2024.

  • Condition: Light scratches
  • Bracelet condition: light scratches on bracelet and clasp
  • Warranty: USA only
Posted at
Mar 7, 2025, 1:00 PM
Active