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The Encyclopedia of Horology

Wristwatch · Diving watch

DOXA Sub 300 'No-T' Sharkhunter 'Whiteshark'

Partially verified

This DOXA Sub 300 'Sharkhunter' is a first-generation example dating to 1967, identified as a 'No-T' thin-cased version. The watch features a 42.5mm stainless steel case and a domed acrylic crystal. It is distinguished by a unidirectional rotating steel bezel engraved with the U.S. Navy's no-decompression dive timing scale. The matte black dial is paired with an all-white handset, a combination which the source notes is associated with the 'Whiteshark' nickname. The watch is powered by an automatic movement and features a date display at the 3 o'clock position. The caseback bears an engraving of a sailing ship. The auction description reports that the object has recently undergone professional case refinishing and a mechanical service. It is currently fitted with a non-original blue textured rubber strap.

Front view of the Doxa Sub 300 showing the black dial, bezel, and blue rubber strap.
Front view of the Doxa Sub 300 showing the black dial, bezel, and blue rubber strap. — Analog:Shift. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
shop.analogshift.com
Category
Wristwatch · Diving watch
Maker / attribution
Doxa
Reference
Sub 300
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
1967
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

The watch is housed in a 42.5mm stainless steel case defined by the source as a 'No-T' thin-cased version, a configuration reportedly produced for only one year. The front is protected by a domed acrylic crystal. The unidirectional steel timing bezel is engraved with the U.S. Navy's no-decompression dive timing scale, featuring red numerals.

The matte black dial includes printed indices displaying light, even patination. The watch utilizes an all-white handset for timekeeping, a pairing that contributes to the 'Whiteshark' nickname cited in the source. A date aperture is positioned at the 3 o'clock marker. The case is completed by an unsigned locking crown and a caseback engraved with a sailing ship, which the source uses to confirm the first-generation origin of the piece.

Evidence for this section
  • “42.5mm stainless steel case”
  • “unidirectional steel timing bezel engraved with the U.S. Navy's No-Decompression scale”
  • “The caseback features DOXA's classic sailing ship engraving further confirming its first-gen provenance.”

History and Production

Introduced in 1967, the DOXA Sub 300 series represented a development in the design of diving instrumentation. This particular watch belongs to the initial production year of the model line.

As a 'No-T' variant, this watch is identified as part of a limited production window within the first year of the series.

Evidence for this section
  • “The first generation of the model, introduced in 1967”
  • “a so-called 'No-T' thin cased version only produced for a year.”

Condition and Maintenance

The auction description reports that the object has undergone a recent professional case refinishing and a mechanical service. The case exhibits the results of this work, and the watch is currently paired with a blue textured rubber strap. The printed indices on the dial are described as having developed a light, even patination.

The watch is presented as an example of a first-generation production unit. The crown is identified as an unsigned locking type, consistent with the original design specifications reported by the source. All technical details, such as the bezel scale and dial configuration, are consistent with the features outlined for the initial Sub 300 output.

Evidence for this section
  • “Fresh off a professional case refinishing and mechanical service”
  • “correct unsigned locking crown”

Open research questions

  • What specific production month or serial number range defines the 'No-T' thin-cased variant?
  • Is there further historical documentation regarding the unofficial 'Whiteshark' nickname usage in 1967?

Source evidence

Recorded claims and source quotations for DOXA Sub 300 'No-T' Sharkhunter 'Whiteshark'
FieldSource-reported valueSource quotation
MakerDoxa“Vendor: DOXA”
ModelSub 300 Sharkhunter“This example is a 'Sharkhunter’ model”
Year of production1967“from the first year of production, 1967”
Case diameter42.5mm“42.5mm stainless steel case”
BezelUnidirectional steel timing bezel“unidirectional steel timing bezel engraved with the U.S. Navy's No-Decompression scale”
CrystalDomed acrylic“domed acrylic crystal”
ProvenanceFirst-generation Sub 300“The caseback features DOXA's classic sailing ship engraving further confirming its first-gen provenance.”
MaintenanceRefinished and serviced“Fresh off a professional case refinishing and mechanical service”

Visible details

  • Domed acrylic crystal profile
  • Unsigned locking crown
  • Date display at 3 o'clock
  • Textured blue rubber strap

Research qualifications

  • 'Whiteshark' is described as a nickname rather than an official factory designation
  • The strap is not described as original to the watch

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

Consulted source

ساعت مچی غواصی DOXA Sub 300 'No-T' Sharkhunter 'Whiteshark' مدل ۱۹۶۷

Reviewed 2026-11-02 · Record 9323fc3868

Terms in this record

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

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