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The Encyclopedia of Horology

Wristwatch · Diving watch

DOXA Sub 300T Sharkhunter Wristwatch

Partially verified

This Doxa Sub 300T Sharkhunter is a diving wristwatch manufactured during the period when Doxa operated under the Synchron group. It features a matte black dial with tritium-based luminous markers and hands, which exhibit a uniform and mild patina. The stainless steel case follows the cushion-shaped ergonomics of the Sub series and includes the Synchron group logo engraved on the case back. Its rotating dual-scale metal bezel is calibrated for dive decompression times. The object is presented as part of a set from the 1970s, which the source indicates includes the watch, box, documentation, and tools. The documentation attributes the production to the 1970s and notes that the Sharkhunter model was marketed as a neutral, classic alternative to other colored dial variants within the Doxa Sub line.

Front view of the Doxa Sub 300T Sharkhunter, showing the black dial, bezel, and beads-of-rice bracelet.
Front view of the Doxa Sub 300T Sharkhunter, showing the black dial, bezel, and beads-of-rice bracelet. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Diving watch
Maker / attribution
DOXA
Reference
300T
Catalogue / lot identifier
AS04381
Source-reported date
circa 1970s
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

The dial is finished in matte black and includes tritium-based luminous material applied to both the indices and the hands, which currently show a mild, uniform patina. A date aperture is positioned at the three o'clock mark.

The bezel is a rotating metal component with dual scales designed for calculating dive decompression times. The stainless steel construction of the case is paired with a matching beads-of-rice metal bracelet. The case back features an engraving of the Synchron group logo, identifying the watch as part of the production period when Doxa was managed under that corporate entity.

Evidence for this section
  • “قاب ساعت دارای فرم ارگونومیک و بالشتکی مخصوص سری ساب بوده”
  • “لوگوی اختصاصی گروه سنکرون بر روی قاب پشتی آن حکاکی شده است”
  • “صفحه ساعت به رنگ مشکی مات طراحی شده”
  • “بزل مدرج دوگانه فلزی که برای جدول عدم نیاز به رفع فشار غواصی به کار می‌رود”

History and Identity

This Sub 300T Sharkhunter belongs to the 1970s era of Doxa tool watches. Within the brand's diving collection, the Sharkhunter variant with its black dial served as a more traditional and neutral design compared to the brightly colored alternatives in the lineup.

The provided source indicates that the object is accompanied by a full kit consisting of the original 1970s box, documents, tags, and tools.

Evidence for this section
  • “سری مدل‌های DOXA Sub در تاریخ ساعت‌های ابزاری غواصی به خاطر نوآوری در طراحی بزل و مقاومت بالا شناخته می‌شوند”
  • “نسخه شارک‌هانتر با صفحه مشکی به عنوان مدلی خنثی‌تر و کلاسیک‌تر در مقایسه با رنگ‌های نارنجی و نقره‌ای این برند عرضه می‌شد”
  • “این نمونه متعلق به دوره‌ای است که شرکت دوکسا تحت مدیریت گروه Synchron فعالیت می‌کرد.”
  • “به همراه جعبه، دفترچه و متعلقات کامل دوران دهه ۱۹۷۰ (Full Kit) ارائه می‌شود”

Condition and Attribution

The auction description reports that the watch remains in an excellent state of preservation, maintaining its original hands and dial with a consistent patina on the luminous material. The bezel retains its colored graduation markings.

Attribution to the 1970s is provided by the source, which classifies the watch as a vintage model from that decade. The source acknowledges the information provided is based on their own assessment and does not constitute an independent verification of authenticity or functional performance.

Evidence for this section
  • “طبق منبع، این ساعت در وضعیت فوق‌العاده‌ای نگهداری شده”
  • “بر روی صفحه و عقربه‌ها پتینه‌ای یکنواخت و ملایم مشاهده می‌شود”
  • “اطلاعات و ویژگی‌های درج‌شده در این شناسنامه تماماً بر اساس توضیحات منبع و فروشنده گردآوری شده است”

Open research questions

  • What is the specific movement caliber utilized within this Sub 300T reference?
  • Can the production timeframe be narrowed down further than the general 1970s decade based on the serial number?

Source evidence

Recorded claims and source quotations for DOXA Sub 300T Sharkhunter Wristwatch
FieldSource-reported valueSource quotation
BrandDOXA“برند: DOXA”
ModelSub 300T Sharkhunter“مدل: Sub 300T Sharkhunter”
Reference300T“Reference: 300T”
Date1970s“دوره ساخت: دهه ۱۹۷۰ میلادی”
DialMatte black“صفحه ساعت به رنگ مشکی مات طراحی شده”
Case BackSynchron group logo“لوگوی اختصاصی گروه سنکرون بر روی قاب پشتی آن حکاکی شده است”
LumeTritium“شاخص‌ها و عقربه‌های آن با ماده شب‌نمای تریتیوم پوشانده شده‌اند”
BraceletBeads of rice“بند فلزی ساعت از نوع دانه برنجی (beads of rice) بوده”

Visible details

  • Cushion-shaped stainless steel case with integrated lug structure
  • Matte black dial with date window at the three o'clock position
  • Beads-of-rice style link metal bracelet
  • Rotating metal bezel with depth decompression graduation

Research qualifications

  • The exact production year within the 1970s is not specified
  • The completeness of the 'Full Kit' items is documented via source description rather than visual verification of every component

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

Consulted source

ساعت مچی غواصی DOXA Sub 300T Sharkhunter (نمونه AS04381)

Reviewed 2026-11-02 · Record e5c0cb2867

Terms in this record

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

Other diving watch records