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

Reference 2803.52.31

About this watch

The Omega Seamaster Aqua Terra 150M Co-Axial 39.2 Railmaster is a statement piece that embodies the spirit of adventure while keeping sophistication at the forefront. Its stunning aesthetics, remarkable movement, and practical features make it stand out in a crowded marketplace. With its sleek design and robust features, it's perfect for both casual outings and formal occasions. The Omega Caliber 2403 automatic movement offers a power reserve of up to 48 hours and is certified chronometer, ensuring excellent timekeeping precision. This watch is not just a pretty face - it's also incredibly functional with a water resistance of 150 meters, making it suitable for both aquatic adventures and formal dinners.
Buy Now on Jomashop
This is an affiliate link
MSRP: $2,850
Market Price: $2,711

Key Features

  • Automatic Omega Caliber 2403 movement
  • Chronometer certification
  • Sapphire glass for scratch-resistance
  • Water resistance up to 150 meters
  • Black alligator leather strap for luxury feel
  • Mixed indexes and arrow hands for precise timekeeping

Specifications

Brand
Omega
Family
Railmaster
Model
Seamaster Aqua Terra 150M Co-Axial 39.2 Railmaster / Black Alligator
Reference
2803.52.31
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 Blue Denim

Omega Railmaster Blue Denim

Omega - Railmaster · $3,000
A pre-owned Omega Railmaster in excellent condition, lightly worn and still under warranty.

  • Condition: Lightly worn
  • Year Bought: March
  • Additional Strap Type: bison leather
Posted at
Jun 25, 2025, 4:42 PM
Active
[WTS] Omega Railmaster Full Kit

Omega Railmaster Full Kit

A Omega Seamaster Railmaster with a 40mm case, co-axial master chronometer and more information available on the official Omega website.

  • Condition: Excellent
  • Box: Inner and outer box included
  • Warranty: 2018 dated warranty cards and manual included
Posted at
Jun 24, 2025, 9:59 AM
Active
[WTS] (Omega) (Railmaster) (ref. 2802.52. 37). In excellent condition.  41mm/21mm lug/ last service by Omega March ‘20. Includes original box, papers, clasp, band, service documents and replaced parts.  For sale on Chron24 $3,300.

(Omega) (Railmaster) (ref. 2802.52. 37). In excellent condition. 41mm/21mm lug/ last service by Omega March ‘20. Includes original box, papers, clasp, band, service documents and replaced parts. For sale on Chron24 $3,300.

Omega - 2802.52 · $3,300
This Omega Railmaster features a 41mm case size and last service in March 2020.

  • Condition: Excellent condition
  • Diameter: 41mm
  • Lug Width: 21mm
Posted at
Jun 21, 2025, 9:11 AM
Active
[WTS] (Omega) (Railmaster) (Ref. 2802.52.37) in excellent condition.  Listed on Chron24.  41mm/ 21mm lug/ 11mm thk/ last serviced by Omega 06/20/ .  Includes original box, papers, clasp, strap and service documents plus replaced parts returned.

(Omega) (Railmaster) (Ref. 2802.52.37) in excellent condition. Listed on Chron24. 41mm/ 21mm lug/ 11mm thk/ last serviced by Omega 06/20/ . Includes original box, papers, clasp, strap and service documents plus replaced parts returned.

Omega - 2802.52.37 · $10,995
This Omega Railmaster is a 41mm watch with 21mm lug width and 11mm thickness, last serviced by Omega in June 2020.

  • Condition: Excellent condition
  • Case size: 41mm diameter
  • Lug width: 21mm
  • Thickness: 11mm
Posted at
Jun 13, 2025, 11:22 AM
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