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The Encyclopedia of Horology

Wristwatch · Automatic wristwatch

Omega Seamaster Railmaster Co-Axial Chronometer

Partially verified

This Omega Seamaster Railmaster Co-Axial Master Chronometer is an automatic wristwatch dating from the 2020s. The timepiece is housed in a 40mm stainless steel case featuring twisted lugs, a brushed bezel, and a signed crown. The brushed gray dial is equipped with printed Arabic numerals at the cardinal positions, luminous triangular hour markers, a matching handset, and an outer railroad minute track. The watch is powered by the automatic Omega Co-Axial Master Chronometer Calibre 8806, which is rated to resist magnetic fields of up to 15,000 Gauss and offers a power reserve of 55 hours. The watch is fitted with a stainless steel bracelet that incorporates a signed hidden deployant clasp. The source reports the condition of the watch as being in as-new condition, noting it as a contemporary interpretation of an Omega design originally introduced in 1957.

A frontal view of the Omega Seamaster Railmaster, showcasing the gray dial and stainless steel bracelet.
A frontal view of the Omega Seamaster Railmaster, showcasing the gray dial and stainless steel bracelet. — Analog Shift. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
shop.analogshift.com
Category
Wristwatch · Automatic wristwatch
Maker / attribution
Omega
Reference
Not recorded
Catalogue / lot identifier
AS07290
Source-reported date
2020s
Source-reported place
Switzerland

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Dial Design

The watch is presented in a 40mm stainless steel case characterized by its twisted lug geometry. The case is finished with a brushed bezel and is paired with a sapphire crystal. The winding crown on the side of the case bears the Omega signature.

The brushed gray dial incorporates printed Arabic numerals at the 3, 6, 9, and 12 o'clock positions. The hours are further defined by luminous triangular indices. A railroad-style minute track encircles the dial perimeter, and the hour and minute hands are matched to the dial's overall aesthetic.

Evidence for this section
  • “40mm stainless steel ‘twisted lug’ case with a sapphire crystal, a signed crown, and a brushed stainless steel bezel.”
  • “luminous brushed gray dial with printed Arabic numerals, a matching handset, and an outer ‘railroad’ minute track.”

Movement and Performance

The timepiece functions using the automatic Omega Co-Axial Master Chronometer Calibre 8806 movement. This movement is engineered to operate in environments with high magnetic interference, specifically resisting magnetic fields up to 15,000 Gauss.

In terms of operational duration, the calibre provides a power reserve of 55 hours. The watch functions as an automatic mechanical instrument designed for daily wear.

Evidence for this section
  • “Powered by the automatic Omega Co-Axial Master Chronometer Calibre 8806 movement”
  • “can resist magnetic fields of up to 15,000 Gauss and has a power reserve of 55 hours.”

Provenance and Condition

The auction description reports the watch as being in as-new condition. The item is sold accompanied by a stainless steel bracelet that features a signed hidden deployant clasp.

The model is a modern iteration of a design originally introduced in 1957. The manufacturer first presented this version of the Seamaster Railmaster at Baselworld in 2017.

Evidence for this section
  • “This particular example from the 2020s”
  • “it’s in as-new condition and ships on its stainless steel bracelet with a signed hidden deployant clasp.”
  • “Introduced at Baselworld in 2017, this contemporary interpretation Omega's 1957 watch”

Open research questions

  • Does the case back feature specific limited edition engravings?
  • What is the specific reference number for this configuration?

Source evidence

Recorded claims and source quotations for Omega Seamaster Railmaster Co-Axial Chronometer
FieldSource-reported valueSource quotation
MakerOmega“Vendor: Omega”
ModelSeamaster Railmaster Co-Axial Master Chronometer“Seamaster Railmaster Co-Axial Master Chronometer”
Case materialStainless steel“40mm stainless steel ‘twisted lug’ case”
MovementOmega Co-Axial Master Chronometer Calibre 8806“automatic Omega Co-Axial Master Chronometer Calibre 8806 movement”
Magnetic resistance15,000 Gauss“resist magnetic fields of up to 15,000 Gauss”
Power reserve55 hours“power reserve of 55 hours”
Date attribution2020s“This particular example from the 2020s”

Visible details

  • The dial features a brushed finish with luminous triangular indices.
  • The case includes signature twisted lugs and a brushed bezel.
  • The bracelet is constructed with a hidden deployant clasp.
  • The crown appears to feature the Omega logo.

Research qualifications

  • Specific production year within the 2020s is not defined.
  • The precise serial number is not provided.

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

ساعت مچی Omega Seamaster Railmaster Co-Axial Master Chronometer

Reviewed 2026-11-02 · Record 6ed534ac17

Terms in this record

Glossary explanations for terms named in this object’s record.

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