Omega Railmaster Seamaster Aqua Terra 150M Automatic 42.2 Railmaster Chronograph / Brown Alligator

Reference 2812.52.37

Omega Seamaster Aqua Terra 150M Automatic 42.2 Railmaster Chronograph / Brown Alligator

About this watch

The Omega Railmaster 2812.52.37 Seamaster Aqua Terra 150M Automatic 42.2 Chronograph is a masterpiece of luxury watchmaking, combining stunning design with robust performance and rich heritage. Its round stainless steel case measures 42.2 mm, featuring a black dial with mixed indexes and arrow hands, providing exceptional readability. The Omega caliber 3205 self-winding chronograph movement is a marvel of engineering, delivering smooth, precise chronograph functionality and exceptional accuracy. With a water resistance rating of 150 meters, this watch can handle anything life throws at it. Its brown alligator leather strap adds a touch of luxury and comfort, making it the perfect companion for any occasion.
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MSRP: $4,750
Market Price: $2,559

Key Features

  • 42.2mm round stainless steel case
  • Black dial with mixed indexes and arrow hands
  • Omega caliber 3205 self-winding chronograph movement
  • 150m water resistance rating
  • Brown alligator leather strap
  • Sapphire glass cover for durability and scratch resistance

Specifications

Brand
Omega
Family
Railmaster
Model
Seamaster Aqua Terra 150M Automatic 42.2 Railmaster Chronograph / Brown Alligator
Reference
2812.52.37
Movement
3205
Movement Features
  • Hours, Minutes, Small Seconds
  • Chronograph, Column wheel
Case
Stainless Steel 42.2mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
150

Current Listings

[WTS] Omega Railmaster 36mm 2804.52.37 | Original Tags & Cards (serviced)

Omega Railmaster 36mm 2804.52.37 | Original Tags & Cards (serviced)

Omega - 2804.52.37 路 $5,301
The Omega Railmaster is an iconic watch with a no-nonsense 3-6-9 dial, designed to be practical and modest compared to other luxury watches.

  • Condition: Serviced
  • Diameter: 36mm
Posted at
Feb 21, 2026, 9:09 AM
Active
View listing on r/WatchExchange
[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
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[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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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