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The Encyclopedia of Horology

Wristwatch · Chronograph wristwatch

Omega Ref. 145.008 Chronostop Seamaster

Partially verified

This stainless steel Omega Seamaster Chronostop, reference 145.008, is a manual-winding diver's wristwatch dated to approximately 1969. The watch features a round, water-resistant case with a screwed case-back. It is equipped with a bidirectional revolving black inner bezel, graduated to 60 minutes for decompression timing, which is operated by a crown positioned at 11 o'clock. The black dial contains applied radial indices with luminous dots. The timepiece includes a 1/6 second chronograph complication with an instantaneous return-to-zero function, which is controlled by a single round push-piece located on the case-band at the 2 o'clock position. The watch is presented on a Nato-type strap with a stainless steel buckle and is powered by the caliber 865 movement. The dial, case, and movement are signed by Omega.

Front view of the Omega Ref. 145.008 showing the black dial, inner decompression bezel, and Nato-type strap.
Front view of the Omega Ref. 145.008 showing the black dial, inner decompression bezel, and Nato-type strap. — Antiquorum. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
catalog.antiquorum.swiss
Category
Wristwatch · Chronograph wristwatch
Maker / attribution
Omega
Reference
145.008
Catalogue / lot identifier
155
Source-reported date
circa 1969
Source-reported place
Switzerland
Source-reported serial
28 439 560

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

The watch is housed in a round stainless steel case designed for diver usage, featuring a water-resistant construction with a screwed case-back. The dial is black and incorporates applied radial indices highlighted with luminous dots to assist with legibility. The timepiece utilizes an inclined inner bezel that is bidirectional and graduated for a 60-minute scale, specifically intended for decompression timing.

Manipulation of the decompression bezel is managed by a secondary crown situated at the 11 o'clock position on the case-band. The chronograph features are activated by a single round push-piece positioned at 2 o'clock, which operates the 1/6 second chronograph function and facilitates an instantaneous return to zero.

Evidence for this section
  • “water-resistant with screwed case-back”
  • “60-minute graduated bidirectional revolving black inclined inner bezel for the decompression times (adjusted by the crown at 11 o’clock)”
  • “black dial with applied radial indexes with luminous dots”

Movement and Signatures

This watch is powered by the Omega caliber 865 movement, a manual-winding mechanism. The movement is recorded with the serial number 28 439 560. The brand maintains consistent branding across the key components, with the dial, case, and movement all bearing the Omega signature.

The auction description reports the grading for the movement as a 2 and the case as a 3, reflecting the functional and physical state of the watch as catalogued.

Evidence for this section
  • “manual-winding, round-shaped, diver’s wristwatch”
  • “Caliber 865”
  • “Signature dial, case and movement”

Condition and Attribution

The auction description reports the overall grade of the object as AA, described as very good. Specific component grades indicate that the dial is in very good condition (2-01), the movement is graded as a 2, and the case is graded as a 3, categorized as good. The watch is dated to approximately 1969.

The watch is delivered with a Nato-type strap secured by a stainless steel buckle. No additional accessories or documentation are mentioned in the cataloguing data provided for this lot.

Evidence for this section
  • “Grading System Grade: AA Very good”
  • “Year circa 1969”
  • “Nato-type strap”

Open research questions

  • What is the reason for the case being recorded as unnumbered?
  • What specific materials comprise the luminous material on the dial indices?

Source evidence

Recorded claims and source quotations for Omega Ref. 145.008 Chronostop Seamaster
FieldSource-reported valueSource quotation
Reference145.008“Reference 145.008”
Movement caliber865“Caliber 865”
Movement number28 439 560“Movement No. 28 439 560”
Case dimensions40.9 mm wide by 46.9 mm high“Height 46.9 mm. Width 40.9 mm.”
Bezel operationCrown at 11 o'clock“60-minute graduated bidirectional revolving black inclined inner bezel for the decompression times (adjusted by the crown at 11 o’clock)”
Chronograph function1/6 second instantaneous return to zero“1/6 second chronograph with instantaneous return to zero”

Visible details

  • Bidirectional inner bezel for decompression timing
  • Single chronograph pusher at 2 o'clock
  • Screwed case-back with Seamaster emblem
  • Luminous dots on dial indices

Research qualifications

  • The case number is reported as unnumbered
  • The specific service history is not provided

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

Consulted source

Omega Ref. 145.008, diver’s, chronograph with instantaneous return to zero, black dial; “Chronostop” “Seamaster”; stainless steel

Reviewed 2026-10-26 · Record 977be9494d

Terms in this record

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

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