Rolex 'Cioccolatone' Reference 4645, 'Perpetual, Chronometer Officially Certified'

Technical characteristics

Type

Automatic wristwatch

Jewels

18

Reference

4645

Case shape

Square with canted corners

Dimensions

30.5 x 30.5 mm

Balance type

Monometallic

Case material

18K yellow gold

Place recorded

Switzerland

Movement calibre

9 3/4'''

Production number

47

Maker / attribution

Rolex

Design

Visible features

• Case features stepped sides and canted corners • Features a subsidiary seconds dial • Equipped with dauphine-style hands • Dial includes applied gold dot markers

Case and Dial Design

The Rolex reference 4645 is distinguished by its square 18K yellow gold case, which measures 30.5 mm by 30.5 mm. The geometry of the case is characterized by its canted corners and stepped sides, a design configuration that contributed to the 'Cioccolatone' moniker applied by collectors. The profile is further defined by straight lugs and a bombé crystal, contributing to a total thickness of 12.5 mm. The dial is executed in a two-tone matte silver finish, which serves as a backdrop for gilt Arabic numerals at the primary hour positions. These are complemented by applied gold dot indexes for the remaining hours. The time is indicated by yellow gold dauphine hands, while a subsidiary seconds register is positioned at the bottom of the dial, surrounded by an outer track of markings.

Movement and Mechanics

Powering this timepiece is a rhodium-plated calibre 9 3/4''' movement. This self-winding mechanism is constructed with 18 jewels and operates with a straight-line lever escapement. The regulation is managed through a monometallic balance, paired with a Breguet balance-spring. The movement itself is fully signed, ensuring consistency with the signatures also present on the dial and the case exterior.

Provenance and Documentation

The auction description notes that this watch is associated with the reference series that was historically advertised in the 'Piccola Guida Gastronomica d’Italia'. The watch is formally documented in the 2001 edition of 'Rolex, Collecting Wristwatches' by Osvaldo Patrizzi, where it appears on pages 66 and 67. Regarding its physical identity, the case number is reported as illegible, although the watch is explicitly marked with the number 47, which is identified as its individual sequence number within the production run of this specific reference.

Identification

Reference

4645

Serial number

47

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.