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

Reference 2803.52.31

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

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.
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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 Seamaster Railmaster Grey Dial

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
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster 39mm 2503.52 for $2580 shipped!

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
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster Denim Dial on Bracelet - Omega Travel Box & Extra Strap Included - $2475

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
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Railmaster 39mm - 2503.52- Price Reduced

Omega Seamaster Railmaster 39mm - 2503.52- Price Reduced

Omega - 2503.52 · $2,950
For sale is this amazing Omega Railmaster featuring a mechanical, self-winding movement with co-axial escapement and exhibition case back.

  • Condition: good, light wear on bezel, bracelet, and clasp
  • Movement: caliber 2403
  • Case diameter: 39mm
Posted at
Apr 18, 2026, 12:54 PM
Active
View listing on r/WatchExchange
[WTS] 2022 OMEGA Seamaster Railmaster 40mm - 220.10.40.20.01.001 - Full Set

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
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster Grey Dial on Staib Mesh Bracelet & OEM Clasp on Rubber Strap

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
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Railmaster 40mm[WTS]

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
Active
View listing on r/WatchExchange
[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

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
Active
View listing on r/WatchExchange
[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
View listing on r/WatchExchange