Doxa Sub 300T Professional Wristwatch
Record status
Individual type · partial
Period
1970s
Maker / issuer
DoxaThis Doxa Sub 300T Professional is a men's wristwatch from the 1970s, produced during the period of Synchron ownership. The watch features an orange dial and a 42mm stainless steel case.
It is equipped with a unidirectional stainless steel bezel, which retains its original orange enamel markings and a tritium luminous pearl at the 12 o'clock position. The timepiece is fitted with an original Doxa-signed "beads of rice" stretch bracelet that includes a ratcheting micro-adjust extension clasp. The dial displays tritium hour markers and hands with a creamy yellow patina. The movement's internal specifications are not documented, though the auction description reports that the watch is keeping time.
The crown is an aftermarket replacement.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Type
- Diving watch
- Brand
- DOXA
- Crown
- Unsigned
- Model
- Sub 300T Professional
- Dial Color
- Orange
- Bracelet Type
- Doxa "Beads of Rice" Micro-Adjust Stretch Bracelet
- Case Diameter
- 42mm
- Case Material
- Stainless Steel
- Place recorded
- Switzerland
- Production Period
- 1970s
- Maker / attribution
- Doxa
Design
- Case and Bezel
- The Doxa Sub 300T features a 42mm stainless steel case that the auction description reports has undergone light polishing in the past. The case retains its original form and dimensions with minor signs of wear. The unidirectional stainless steel bezel remains in condition described as stunning, retaining its orange enamel and the tritium pearl located at the 12 o'clock position. The crown is unsigned and is considered an early replacement, while the original mineral glass crystal remains clean without visible wear.
- Dial and Hands
- The watch displays a high-visibility orange Professional dial. Under magnification, the surface exhibits light bubbling. The hour markers are applied with tritium lume that has acquired a creamy yellow patina over time. Inspection under U.V. light shows no degradation of the lume on the dial indices or the matching hands. The dial includes a date aperture positioned at the 3 o'clock marker.
- Visible features
- • Orange dial with tritium indices • Unidirectional bezel with numerical markings • Stainless steel case with beads of rice bracelet • Date aperture at the 3 o'clock position
- Bracelet and Provenance
- This watch is paired with an original Doxa-signed stainless steel "beads of rice" stretch bracelet. The clasp incorporates a ratcheting micro-adjust extension mechanism designed for use with diving suits. The bracelet shows some degree of stretch due to age but fits a 7.5-inch wrist. The watch dates to the "Synchron Era," a period in the late 1960s and 1970s when the Doxa brand was held by Synchron. This era focused on producing durable timepieces for the burgeoning recreational diving market in the United States and Europe.
Identification
- Reference
- Sub 300T
- Source note
- Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.
Catalogue references
No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.
Research required
- Research required: Unsigned crown is believed to be an early replacement
- Research required: Service history is unknown
- Research required: Dial exhibits light surface bubbling visible only under loupe