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Rolex Datejust Ovettone Reference 6305

ProbableCredible evidence exists but classification is not fully established.

Record status

Individual type · partial

Period

circa 1955

Maker / issuer

Rolex

This Rolex Datejust, identified as reference 6305, is an automatic wristwatch encased in a 36mm steel body. It features a distinctive white honeycomb-patterned dial, which includes a date aperture with a metal frame revealing a roulette date wheel.

The dial is signed with red "DATEJUST" text, the "OCC" designation, and the word "SWISS" at the base. The watch is equipped with dagger-style hands containing lume, which shows signs of patina. Its nickname, 'Ovettone' or 'big egg', relates to the deep, rounded caseback construction required to accommodate the automatic winding rotor mechanism. The watch is presented without a cyclops-magnified crystal, fitted instead with a tropic crystal.

It is accompanied by a Bulang and Sons strap and a leather watch pouch, and has undergone a full mechanical service by the vendor.

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
Datejust wristwatch
Maker
Rolex
Crystal
Tropic (non-cyclops)
Nickname
Ovettone
Reference
6305
Dial Style
Honeycomb
Date Window
Roulette wheel
Case Material
Steel
Serial Number
87xxx
Place recorded
Switzerland
Maker / attribution
Rolex

Design

Visible features
• Dagger-style hands with visible patina on luminous inserts. • Honeycomb-patterned textured dial surface. • Roulette date wheel displayed in a metal-framed aperture.
Dial and Indication
The dial is a white honeycomb pattern, described as a rare feature for this reference. It is signed with the Rolex Oyster Perpetual Datejust text, the "DATEJUST" word presented in red, and the "OCC" (Officially Certified Chronometer) designation. The date function is displayed through a metal-framed aperture at the three o'clock position, which shows a roulette date wheel. The markers and dagger hands exhibit luminescent material that has aged, displaying a patina consistent with its mid-1950s production date.
Case and Crystal Construction
The watch features a 36mm steel case characterized by the seller as an 'Ovettone' or 'big egg' model. This designation arises from the depth of the case, which was engineered to house the automatic winding rotor. As observed in the documentation, the caseback is deep and rounded to accommodate these internal mechanical components. The timepiece is currently fitted with a tropic crystal that does not feature a cyclops magnification lens. This configuration is noted to offer a distinct aesthetic to the watch compared to standard date-magnified versions.
Mechanical and Service Status
The movement is housed within the steel case and features a self-winding rotor system as described by the vendor. The internal components, including the winding mechanism, are original to the design of this deep-case model. The watch is reported as having been fully serviced by the vendor's watchmaker.

Identification

Reference
6305
Serial number
87xxx
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: The serial number '87xxx' is provided by the vendor, and the dating to 1955 is based on this figure.
  • Research required: The claim of the watch being in 'all-original condition' is attributed to the vendor.
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