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 Railmaster 2803.52.31 Full Set with Box & Papers, Freshly Serviced

Omega Railmaster 2803.52.31 Full Set with Box & Papers, Freshly Serviced

Omega - 2803.52.31 · $2,925
This Omega Railmaster from the early 2000s features a classic 39.2mm design, dating back to 2006. The watch has been recently serviced and comes with a brand new grey leather strap.

  • Condition: Superb
  • Year: 2006
  • Case size: 39.2mm
Posted at
May 26, 2026, 6:42 PM
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster 36 2504.52

Omega Railmaster 36 2504.52

Omega - 2504.52 · $6,000
A 36mm Omega Railmaster from 2007 in excellent condition with a few age-related imperfections.

  • Condition: Excellent with some minor cosmetic damage and potential servicing needed
  • Year of production: 2007
  • Case size: 36mm
  • Crown threads issue: Yes (may need servicing)
Posted at
May 27, 2026, 11:46 PM
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster 2502.52 41mm - $2,490

Omega Railmaster 2502.52 41mm - $2,490

Omega - 2502.52 · $2,490
Up for sale is my great condition Omega Railmaster 2502.52, This watch measures at 41mm and has an automatic Omega 2403 movement.

  • Condition: Very good condition for its age
  • Case size: 41mm diameter
  • Movement: Automatic Omega 2403
Posted at
May 24, 2026, 10:01 PM
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster. Clean. Full kit.

Omega Railmaster. Clean. Full kit.

Omega - Railmaster · $2,795
The Omega Railmaster is a full kit with box and papers, available for sale from WatchExchange Enterprises in NJ USA.

  • Box papers: true
Posted at
May 23, 2026, 10:28 AM
Active
View listing on r/WatchExchange
[WTS] 40mm Omega Seamaster Railmaster Black Dial - Ref 220.12.40.20.01.001 - FULL KIT (Box & Cards)

40mm Omega Seamaster Railmaster Black Dial - Ref 220.12.40.20.01.001 - FULL KIT (Box & Cards)

Omega - 220.12.40.20.01.001 · $2,500
The Omega Seamaster Railmaster features a black dial with vertical linear-brushed texture, recessed vintage-colored lume markers, and a signature 'lollipop' seconds hand. It has been an honest daily-wear tool watch.

  • Condition: Daily-wear tool watch with visible scuffs on the bezel and top-left lug
  • Movement: METAS-certified Calibre 8806
Posted at
May 22, 2026, 11:28 AM
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster 2503.52 39mm - $2,490

Omega Railmaster 2503.52 39mm - $2,490

Omega - 2503.52 · $2,490
This Omega Railmaster 2503.52 is a steel cased watch on an original Omega Steel bracelet, featuring a sapphire crystal and a dial with minor damage.

  • Condition: 8.9/10 - minor damage on dial, patina on hands, minimal hairlines
  • Case Size: 39mm diameter
  • Bracelet Size Fit: up to 7-7.25 inch wrists depending on wrist shape
  • Shipping Method: Fedex Priority Shipping
Posted at
May 22, 2026, 4:11 AM
Active
View listing on r/WatchExchange
[WTS] Omega Railmaster 2502.52 41mm - $2,590

Omega Railmaster 2502.52 41mm - $2,590

Omega - 2502.52 · $2,590
Up for sale is my great condition Omega Railmaster 2502.52, measuring at 41mm with an automatic Omega 2403 movement.

  • Condition: Very good condition for its age
  • Case size: 41mm
  • Movement type: Automatic
  • Bracelet material: Steel
Posted at
May 17, 2026, 9:36 PM
Active
View listing on r/WatchExchange
[WTS] price reduction! 2026 Full Set Omega Railmaster 235.10.38.20.06.001

price reduction! 2026 Full Set Omega Railmaster 235.10.38.20.06.001

Omega - 235.10.38.20.06.001 · $3,999
This Omega Railmaster features a 38mm steel case with a gray gradient dial and is available for sale in excellent pre-owned condition. The watch includes a full set of accessories, making it an attractive option for those looking to purchase this model.

  • Condition: excellent pre-owned condition
  • Case size: 38mm diameter
  • Bracelet material: steel
  • Dial color: gray gradient
Posted at
May 14, 2026, 4:47 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