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

Reference 2603.52.31

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

About this watch

The Omega Seamaster Aqua Terra 150M Co-Axial 39.2 Railmaster in Yellow Gold and Black Alligator is a stunning timepiece that beautifully marries elegance and functionality. The watch features a round shape with a diameter of 39.20 mm, crafted from stunning yellow gold, and a black alligator leather strap adding sophistication. The Omega caliber 2403 movement boasts Co-Axial escapement and chronometer certification, ensuring exceptional accuracy and reliability. With its superior craftsmanship, timeless design, and impressive movement, this watch is not just a timepiece but a legacy. Whether you're looking for a statement piece or a reliable watch for everyday wear, the Omega Seamaster Aqua Terra checks all the boxes.
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Key Features

  • Omega Caliber 2403 Co-Axial Escapement
  • Chronometer Certified Movement
  • 150 Meter Water Resistance
  • Yellow Gold Case and Black Alligator Strap
  • Sapphire Crystal for Scratch Protection
  • 48-Hour Power Reserve
  • Automatic Movement with Hours, Minutes, and Seconds

Specifications

Brand
Omega
Family
Railmaster
Model
Seamaster Aqua Terra 150M Co-Axial 39.2 Railmaster Yellow Gold / Black Alligator
Reference
2603.52.31
Movement
2403
Movement Features
  • Hours, Minutes, Seconds
  • Co-Axial Escapement, Chronometer
Case
Yellow Gold 39.2mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
150

Current Listings

[WTS] Omega Railmaster

Omega Railmaster

Omega - 220.10.40.20.01.001 · $3,000
This Omega Seamaster Railmaster is a recently discontinued model that comes with its full kit, undated warranty card, and original box.

  • Case mark location: near 1 o'clock
  • Shipping cost: 30 (FedEx 2 Day)
  • Shipping method: CONUS only
Posted at
Nov 8, 2025, 3:14 PM
Active
View listing on r/WatchExchange
[WTS] OMEGA RAILMASTER blue denim - used with bison leather strap.

OMEGA RAILMASTER blue denim - used with bison leather strap.

Omega - Railmaster · $2,900
This Omega Railmaster has a denim-inspired model with a stainless steel case, brushed 'blue jeans' dial, and a NAIAD LOCK design caseback. It features a Co-Axial Master Chronometer Calibre 8806 movement resistant to magnetic fields of 15,000 gauss.

  • Condition: Used with scratches on the top right of the bezel
  • Age: 1 year
  • Strap: Bison leather strap (not original)
  • Case Size: 40 mm diameter
Posted at
Nov 7, 2025, 2:26 PM
Active
View listing on r/WatchExchange
[WTS] 2025 Omega Railmaster Black Dial w/Bracelet - Full Kit

2025 Omega Railmaster Black Dial w/Bracelet - Full Kit

Omega - 235.10.38.20.06.001 · $4,699
The new Railmaster 38-mm reference in black, featuring a Co-Axial Master Chronometer Calibre 8806 and dual-color lume.

  • Condition: Near-mint with insignificant hair-line scratches
  • Case Dimension: 38mm diameter
  • Lug To Lug: 45mm length
  • Lug Width: 19mm width
Posted at
Nov 5, 2025, 8:56 PM
Active
View listing on r/WatchExchange
[WTS] 2025 Omega Seamaster Railmaster 235.12.38.20.06.001

2025 Omega Seamaster Railmaster 235.12.38.20.06.001

Omega - 235.12.38.20.06.001 · $4,500
A 2025 Omega Seamaster Railmaster in excellent condition, featuring a clean sapphire crystal and black dial, powered by an automatic Calibre 8806 Master Chronometer movement.

  • Condition: Excellent condition overall, minimal wear on stainless steel case
  • Case size: 38mm diameter
  • Movement type: Automatic
Posted at
Nov 5, 2025, 9:53 AM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Railmaster XXL 2806.52.37

Omega Seamaster Railmaster XXL 2806.52.37

Omega - 2806.52.37 · $2,799
A large watch suitable for the larger gentleman, featuring a modified Unitas movement and excellent lume.

  • Condition: Overall good condition, used strap
  • Case Size: 49.2mm diameter
  • Movement: Omega 2201, modified Unitas movement
  • Water Resistance: 150m depth rating
Posted at
Nov 4, 2025, 8:16 PM
Active
View listing on r/WatchExchange
[WTS] 2000s Omega Seamaster Aqua Terra Railmaster 36mm ref. 2504.52

2000s Omega Seamaster Aqua Terra Railmaster 36mm ref. 2504.52

Omega - 2504.52 · $5,700
A 2000s Omega Seamaster Aqua Terra Railmaster 36mm with a stainless steel case and black dial. The watch features an automatic movement, Super-LumiNova lume, and a sapphire crystal.

  • Condition: Normal wear in the form of a few hairlines, faint scratches, and tiny nicks throughout, some micro patina on hands
  • Case Material: Stainless steel
  • Diameter: 36 mm
  • Lug Width: 19 mm
Posted at
Nov 2, 2025, 4:51 PM
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster

Omega Railmaster

Omega - 220.10.40.20.01.001 · $3,100
This Omega Seamaster Railmaster is a recently discontinued model that includes full kit and undated warranty card, sold with original box.

  • Condition: Pre-owned with small mark near 1 o'clock on case
  • Case size: 40mm diameter
Posted at
Nov 1, 2025, 3:15 PM
Active
View listing on r/WatchExchange
Omega Railmaster - 220.10.40.20.03.001 - Blue - Steel - 40mm - Mint

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

Omega - 220.10.40.20.03.001 · $3,795
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
View listing on RolexForums
NO TRADES: Omega '57 Trilogy Railmaster. $5030

NO TRADES: Omega '57 Trilogy Railmaster. $5030

Omega - '57 Trilogy Railmaster · $5,030
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
View listing on RolexForums