2025 Omega Seamaster Railmaster 38mm Complete Set

Omega Seamaster Railmaster 235.12.38.20.13.001

Video footage available upon request. Open to offers. Bracelet sizing service available.

Model Background

The Omega Railmaster traces its roots back to 1957, when it was introduced alongside the Speedmaster and Seamaster 300 as a purpose-built tool watch for railway professionals and engineers who needed reliable timekeeping in magnetically hostile environments. This 2025 edition honors that legacy while pushing it dramatically forward — the Co-Axial Master Chronometer Caliber 8804 is METAS certified and resistant to magnetic fields up to 15,000 gauss, making it roughly fifteen times more resistant than the original. The beige-to-black gradient dial with vintage Super-LumiNova numerals and a small seconds sub-dial at 6 o'clock gives the piece a warm, heritage-driven aesthetic, while the movement visible through the exhibition caseback is finished with rhodium plating and Geneva waves in arabesque. It's one of the most understated and historically grounded watches in Omega's current lineup.

Specifications

Model: Omega Seamaster Railmaster Co-Axial Master Chronometer Small Seconds 38

Reference: 235.12.38.20.13.001

Caliber: Omega 8804 — 35 jewels, 25,200 vph (3.5 Hz), METAS Master Chronometer certified

Case Material: Stainless steel (brushed and polished)

Case Diameter: 38mm

Case Thickness: 12.4mm

Bezel: Fixed, stainless steel

Crown: Screw-down, stainless steel

Crystal: Domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides

Caseback: Transparent sapphire crystal exhibition caseback

Dial: Beige with black gradient, large Arabic numerals and stick hour markers in vintage Super-LumiNova, small seconds sub-dial at 6 o'clock with beige varnished hand

Strap: Golden brown Novonappa leather

Clasp: Stainless steel deployant folding clasp

Movement: Automatic self-winding with Co-Axial escapement

Power Reserve: 55 hours

Water Resistance: 150 meters (15 bar)

Functions: Hours, minutes, small seconds

Condition Report

Case: 10/10

Bezel: 10/10

Crystal: 10/10

Dial/Hands: 10/10

Strap: 9/10 — Light wear consistent with daily use for a 2025 production year

Clasp/Buckle: 10/10

Caseback: 10/10

Polishing Status: Unpolished

Photos taken on strap at standard length, fitting approximately 16–20cm (6.3–7.9 inch) wrists.

Delivery Contents

Box, warranty card, instruction manual, hangtag

Please refer to photos for full contents.

Service & Authenticity

The watch is running at 305 degrees of amplitude on the timegrapher. No service history on record. The original Omega 5-year international warranty is active (card dated 11/05/2025), expiring November 2030.

Shipping & Legal

Ships from: Huntsville, AL

Shipping: Fully insured overnight with tracking provided

Shipping within CONUS only

Buyers are responsible for any applicable taxes and duties

Watch is sold in accordance with United States laws and regulations

Closing

All watches are inspected by our watchmakers for condition, authenticity, and functionality before sale. Feel free to reach out via messenger with any questions.