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Rolex Datejust Ref. 1603

ProbableCredible evidence exists but classification is not fully established.

Record status

Individual type · partial

Period

1975

Maker / issuer

Rolex

The Rolex Datejust reference 1603 is a vintage wristwatch dating to 1975, identified by serial number 393xxxx. It features a silver-colored 'Sigma' dial, indicated by two small symbols at the bottom, which denote the use of solid white gold for the hour markers.

These markers are finished with black enamel inserts, coordinating with the luminous plots and handset. The stainless steel case is fitted with a reeded bezel, which is described as intact. The watch is presented on an Oyster bracelet, reference 78360, featuring solid links and 558 end links, with a clasp stamped with the date '1/76'. The mechanical movement has undergone a complete service, and the watch is accompanied by a handmade leather travel pouch.

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

Date
1975
Dial
Sigma dial
Type
Datejust wristwatch
Bezel
Reeded bezel
Clasp
1/76
Maker
Rolex
Bracelet
Oyster 78360
Reference
1603
Place recorded
Switzerland
Maker / attribution
Rolex

Design

Case and Dial
The Rolex Datejust reference 1603 features a stainless steel case paired with the signature reeded bezel. The source notes that the steel bezel retains distinct, well-preserved grooves, contributing to the overall structural integrity reported for the watch. The dial is a silver-toned 'Sigma' variant, identified by the specific Sigma symbols placed at the bottom of the dial. These markers designate the inclusion of solid white gold for the hour indices, which are further enhanced with black enamel centers. The luminous material on the dial plots matches the handset, maintaining a consistent aesthetic profile.
Visible features
• Silver Sigma dial with white gold indices • Intact stainless steel reeded bezel • Oyster bracelet reference 78360 with 558 end links • Date stamp 1/76 on the clasp
Movement and Service
According to the source documentation, the mechanical movement of the watch has undergone a complete service performed by the associated workshop. It is noted that all technical specifications and condition evaluations are based on the original vendor's statements. The cataloging entity has not performed an independent technical verification of the movement's components, historical correctness, or originality.
Bracelet and Construction
The watch is equipped with an Oyster bracelet, cataloged as reference 78360. This component features solid links and is secured with 558 end links. The clasp of the bracelet carries a date code engraving reading '1/76', which aligns with the production timeframe suggested by the serial number. The timepiece is supplied with a custom, handmade leather pouch for transport and storage.

Identification

Reference
1603
Serial number
393xxxx
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 provenance and exact service history are reported by the source without independent verification
  • Research required: Authenticity of individual components is based on the seller's claims
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