Skip to content
The Encyclopedia of Horology

Wristwatch · Manual-winding wristwatch

Omega Seamaster 600 Ref. 135.011

Partially verified

This Omega Seamaster 600, reference 135.011, is a manual-winding wristwatch dating to circa 1963. The piece features a 34mm stainless steel case characterized by faceted lugs, a screw-down caseback, and a signed crown. The dial is a matte black variant referred to as a 'Technical' dial, which includes a printed red crosshair, elongated Tritium indices, and additional minute markers for legibility. It is equipped with a matching 'pencil' handset featuring Tritium inserts. The watch is powered by the Omega Calibre .601 manual-winding movement. This particular example follows the design intent of the Seamaster model family as a water-resistant, time-only wristwatch. It is presented on a strap distinct from its original configuration, though the listing focuses on the core timepiece components.

Front view of the Omega Seamaster 600 Ref. 135.011 showing the matte black 'Technical' dial with red crosshair.
Front view of the Omega Seamaster 600 Ref. 135.011 showing the matte black 'Technical' dial with red crosshair. — Oliver & Clarke. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
oliverandclarke.com
Category
Wristwatch · Manual-winding wristwatch
Maker / attribution
Omega
Reference
135.011
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
circa 1963
Source-reported place
Not established

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 features a stainless steel case measuring 34mm in diameter. The design includes faceted lugs and a screw-down caseback, consistent with the model's intent as a water-resistant timekeeper. A signed crown is positioned at the 3 o'clock side of the case.

The dial is a matte black version designated as a 'Technical' dial. It is detailed with a red crosshair pattern, elongated Tritium indices, and supplemental minute markers. The handset comprises pencil-style hands, also incorporating Tritium material for visibility.

Evidence for this section
  • “Coming in at 34mm in diameter, this stainless steel piece features nicely 'faceted' lugs, with a screw-down caseback and a signed crown.”
  • “these black dials have a printed red 'crosshair,' elongated Tritium indices with additional minute markers for legibility, and a matching 'pencil' handset with Tritium within.”

Movement and Function

The timepiece is operated by an Omega Calibre .601 movement. This is a manual-winding mechanism, which aligns with the production period of the reference.

As a member of the Seamaster 600 line, the watch is intended as a versatile, time-only instrument rather than the specialized dive watches that were developed later in the Seamaster family's history.

Evidence for this section
  • “Powering this piece is Omega's attractive, workhorse Calibre .601 manual-winding movement.”
  • “follows the original recipe for the Seamaster: a water-resistant, versatile, modestly sized timekeeper”

Historical Context

The Seamaster model family was established in 1948. While the name is often associated with dive watches today, early models such as this reference 135.011 were designed as standard water-resistant time-only wristwatches.

The reference 135.011 dates to approximately 1963, a period during which the Seamaster line was expanding into various aesthetic and technical iterations.

Evidence for this section
  • “The model family was conceived in 1948 as what was effectively a time-only watch”
  • “The piece that we have here, a Ref. 135.011, dates to circa 1963”

Open research questions

  • Is the Calibre .601 movement original to this specific case serial number?
  • Was the 'Technical' dial configuration an official catalog variant for the 135.011?

Source evidence

Recorded claims and source quotations for Omega Seamaster 600 Ref. 135.011
FieldSource-reported valueSource quotation
ModelSeamaster 600“Seamaster 600”
Reference135.011“Ref. 135.011”
Datecirca 1963“dates to circa 1963”
Case diameter34mm“Coming in at 34mm in diameter”
MovementOmega Calibre .601“Omega's attractive, workhorse Calibre .601 manual-winding movement”
Dial featuresMatte black with red crosshair“these black dials have a printed red 'crosshair”

Visible details

  • Matte black dial with printed red crosshair
  • Faceted stainless steel lugs
  • Pencil-style hour and minute hands with Tritium inserts
  • Signed winding crown at the 3 o'clock position

Research qualifications

  • The source does not explicitly verify the originality of the luminous material
  • The source does not confirm if the strap is an original Omega accessory

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

Consulted source

ساعت مچی امگا Omega Seamaster 600 رفرنس 135.011 با صفحه مشکی تکنیکال

Reviewed 2026-11-02 · Record b04f3d7a30

Terms in this record

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

Other manual-winding wristwatch records