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 Seamaster Railmaster 40mm Ref. 220.12.40.20.03.001

Omega Seamaster Railmaster 40mm Ref. 220.12.40.20.03.001

Omega - 220.12.40.20.03.001 路 $3,800
This Omega Seamaster Railmaster features a blue gradient dial and is certified as a Master Chronometer by METAS.

  • Condition: Excellent overall condition
  • Case size: 40mm diameter
  • Case material: Stainless steel
  • Dial color: Blue gradient
Posted at
Feb 15, 2026, 9:16 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Railmaster XXL 49.2mm Watch Only

Omega Seamaster Railmaster XXL 49.2mm Watch Only

Omega - 2806.52.37 路 $3,500
Omega Seamaster Railmaster XXL watch, purchased from Watchesmiles just over a month ago.

  • Condition: great condition
  • Case Size: 49.2mm diameter
Posted at
Feb 13, 2026, 7:12 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Railmaster XXL 49.2mm

Omega Seamaster Railmaster XXL 49.2mm

Omega - Railmaster XXL
This listing does not contain a description of the watch.

  • Size: 49.2mm diameter
Posted at
Feb 13, 2026, 2:56 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Railmaster XXL 49.2mm

Omega Seamaster Railmaster XXL 49.2mm

Omega - Railmaster XXL 路 $3,500
A large Omega Seamaster Railmaster model with a unique design, sold as is without original packaging or documentation.

Posted at
Feb 13, 2026, 2:55 PM
Active
View listing on r/WatchExchange
[WTS] [Price Reduced] Omega Railmaster Silver 220.10.40.20.06.001 2023 Full Set Like New under omega warranty till 2028 - $2999 + 馃彿 馃敟

[Price Reduced] Omega Railmaster Silver 220.10.40.20.06.001 2023 Full Set Like New under omega warranty till 2028 - $2999 + 馃彿 馃敟

Omega - 220.10.40.20.06.001 路 $2,999
This is a discontinued Omega Railmaster model that's hard to find in this condition and still under warranty till 2028.

  • Condition: Like new
  • Warranty Expiration Date: 2028
  • Set Contents: Full set, half links, 3 Omega cards
Posted at
Feb 13, 2026, 12:39 PM
Active
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[WTS] Omega Railmaster 36mm 2804.52.37 | Original Omega certificates (serviced)

Omega Railmaster 36mm 2804.52.37 | Original Omega certificates (serviced)

Omega - 2804.52.37 路 $5,301
The Omega Railmaster is an iconic watch with a no nonsense 3-6-9 dial, making it practical and modest compared to the Rolex Explorer. Its design has remained relatively unchanged since 1957.

  • Condition: serviced
  • Diameter: 36mm
  • Certificates: original
  • Shipping Us: 52
Posted at
Feb 12, 2026, 9:08 AM
Active
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[WTS] 2017 OMEGA Seamaster Railmaster 40MM Blue Dial Steel Bracelet

2017 OMEGA Seamaster Railmaster 40MM Blue Dial Steel Bracelet

OMEGA - Seamaster Railmaster 40MM Blue Dial Steel Bracelet 路 $3,200
A 2017 OMEGA Seamaster Railmaster with a blue dial, 40mm in size. The watch is in good condition despite some minor flaws.

  • Condition: Used, with minor cosmetic damage
  • Missing Items: International warranty card, inner box, outer box flap
Posted at
Feb 5, 2026, 8:19 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 路 $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 路 $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