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The Encyclopedia of Horology

Wristwatch · Automatic wristwatch

Omega Seamaster Automatic Reference 2846-4SC

Partially verified

This mid-1950s Omega Seamaster automatic wristwatch, reference 2846-4SC, features a stainless steel case measuring 34 mm in diameter with an 18 mm lug width and a 41 mm lug height. The dial has aged to a warm yellow-brown tone and displays applied Arabic numerals at the quarter hours, dart indices, and dauphine hands, signed 'Omega Automatic' and 'Seamaster'. It is fitted with an acrylic crystal and a textured leather strap. According to the seller, the timepiece is powered by Omega's 17-jewel mechanical calibre 500 automatic movement and dates to circa 1956.

Direct dial and case view of the Omega Seamaster ref. 2846-4SC on a textured strap
Direct dial and case view of the Omega Seamaster ref. 2846-4SC on a textured strap — Vintage Watch Specialist. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
vintagewatchspecialist.com
Category
Wristwatch · Automatic wristwatch
Maker / attribution
Omega
Reference
2846-4SC
Catalogue / lot identifier
vws3975cs
Source-reported date
c. 1956
Country
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

Object Identification

The timepiece is cataloged as an Omega Seamaster automatic, model reference 2846-4SC. The source attributes a production date of circa 1956.

The watch is housed in a stainless steel case measuring 34 mm in width, with a lug height of 41 mm and a lug width of 18 mm.

Evidence for this section
  • “Model Ref 2846-4SC”
  • “Date of Issue c.1956”
  • “Width 34mm”
  • “Lug Height 41mm”
  • “Lug width 18mm”

Dial and Exterior Features

The dial is described as having a yellow-brown tone with applied Arabic numerals at the quarter hours and dart indices. The handset consists of dauphine-style hour and minute hands paired with a central sweep seconds hand.

The watch is fitted with a plexiglass crystal and a brown leather strap.

Evidence for this section
  • “Dial Yellow-Brown”
  • “Applied indices and Arabic numerals at the quarters”
  • “dauphine hands”
  • “Crystal Plexiglass”
  • “Bracelet Brown Leather”

Movement and Internal Components

The source documentation reports the movement as an Omega calibre 500, described as a 17-jewel mechanical automatic movement.

Direct visual verification of the movement or internal caseback was not provided in the source record; these specifications are based on seller assertions.

Evidence for this section
  • “Calibre 500”
  • “Jewels 17j”
  • “Movement Type Mechanical”

Open research questions

  • Verification of the calibre 500 movement against the production period of reference 2846-4SC.
  • Determination of the extent of dial discolouration through high-resolution internal inspection.
  • Presence of factory-standard markings on the internal caseback.

Source evidence

Recorded claims and source quotations for Omega Seamaster Automatic Reference 2846-4SC
FieldSource-reported valueSource quotation
Reference2846-4SC“Model Ref 2846-4SC”
Calibre500“Calibre 500”
Jewels17j“Jewels 17j”
Case MaterialStainless Steel“Case Stainless Steel”
CrystalPlexiglass“Crystal Plexiglass”
Width34mm“Width 34mm”
Lug Height41mm“Lug Height 41mm”
Lug Width18mm“Lug width 18mm”
Case MaterialStainless Steel“Case Stainless Steel”
WindingAutomatic“Winding Automatic”

Visible details

  • Patinated warm yellow-brown dial with applied Arabic numerals at 12, 3, 6, and 9.
  • Dauphine hour and minute hands accompanied by a central sweep seconds hand.
  • Stainless steel case with faceted lugs, fitted to a textured brownish-tan leather strap.

Research qualifications

  • Movement and interior caseback are not visible in the provided image.
  • Movement calibre 500 and jewel count are reported by the seller rather than directly visible.

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

Consulted source

Omega Seamaster Automatic - Reference 2846-4SC - Tropical Dial - c.195 – Vintage Watch Specialist

Reviewed 2026-10-25 · Record 2e4427a341

Terms in this record

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

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