Omega Railmaster Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster / Bracelet

Reference 2502.52.00

Omega Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster / Bracelet

About this watch

The Omega Railmaster 2502.52.00 is a luxury watch that beautifully marries functionality with style. This stunning timepiece features the Omega Caliber 2403 movement, which boasts Co-Axial escapement technology for enhanced accuracy and reduced friction between moving parts. The case is crafted from stainless steel, giving it a robust yet refined appearance, while the black dial features a classic, clean design with mixed indexes that create a sense of depth and sophistication. With a water resistance of up to 150 meters, this watch can handle any situation, whether you're swimming or caught in the rain. The sapphire glass enhances durability while providing a crystal-clear view of the dial. This watch is perfect for any occasion, from formal events to casual outings, thanks to its versatility and reliable performance.

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MSRP: $3,250

Market Price: $2,774

Key Features

Omega Caliber 2403 movement
Co-Axial escapement technology
Stainless steel case
Black dial with mixed indexes
150m water resistance
Sapphire glass

Specifications

Brand

Omega

Family

Railmaster

Model

Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster / Bracelet

Reference

2502.52.00

Movement

2403

Movement Features

Hours, Minutes, Seconds
Co-Axial Escapement, Chronometer

Case

Stainless Steel 42.2mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

150

Current Listings

Omega Railmaster 2503.52 (39.2mm) Full Set

Omega - 2503.52 · $3,150

39.2mm Railmaster with Cal. 2403 movement and 44HRs power reserve.

Condition: Great condition, no service history
Case Diameter: 39.2mm
Thickness: 11mm
Lug To Lug: 47mm

Posted at

Oct 24, 2025, 9:53 AM

Active

View listing on r/WatchExchange

Omega Railmaster 36mm 2804.52.37 | serviced (Original Box & Papers)

Omega - 2804.52.37 · $5,301

The Omega Railmaster is an iconic watch with a no-nonsense dial design that has remained largely unchanged since 1957.

Condition: recently serviced
Case size: 36mm
Dial type: 3-6-9

Posted at

Oct 23, 2025, 10:17 AM

Active

View listing on r/WatchExchange

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