Rolex Oyster Chronograph Monoblocco Antimagnetic reference 4500
Record status
Individual type · partial
Period
Vers 1946
Maker / issuer
RolexAccording to the auction catalogue, this Rolex Oyster Chronograph Monoblocco Antimagnetic, reference 4500, dates to circa 1946. It is constructed in an 18-karat yellow gold case measuring 35 mm in diameter, manufactured by Spillmann with hammer-head punch mark 136.
The round case features round chronograph pushers, an original signed screw-down Oyster crown, and a screw-down case back. The patinated silver dial displays applied hour markers, painted minutes, tachymeter and telemeter scales, and two sub-dials: small seconds at 9 o'clock and a 30-minute counter at 3 o'clock. The source reports a manual-wind Calibre 23 movement signed Rolex with a ROW balance bridge engraving, accompanied by a leather strap with a signed gold-plated pin buckle.
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
- Chronograph
- Calibre
- Calibre 23
- Reference
- 4500
- Case Maker
- Spillmann (hammer head punch no. 136)
- Gross Weight
- 53.5 g
- Case Diameter
- 35 mm
- Case Material
- 18K yellow gold (750)
- Serial Number
- 418846
- Place recorded
- Switzerland
- Maker / attribution
- ROLEX
Design
- Visible features
- • Two-register chronograph dial configuration with sub-dials at 3 and 9 o'clock. • Round chronograph pushers flank a fluted winding crown on a yellow-gold case. • Dark textured leather strap fitted with a yellow-toned pin buckle bearing a coronet emblem.
- Dial Configuration
- The watch features a silvered dial exhibiting a uniform mottled patina and minor staining. The layout includes applied hour markers, painted minute tracks, and integrated tachymeter and telemeter scales. Chronograph functionality is presented via a two-register setup: a 30-minute counter positioned at the 3 o'clock mark and a small seconds register at 9 o'clock. The dial is signed and includes the 'Swiss Made' designation.
- Case Construction and Identification
- This Rolex reference 4500 is identified by the manufacturer as a 'Monoblocco' chronograph, a term applied by the source to models where the bezel is integrated into the case structure. The 35 mm round case is constructed from 18-karat yellow gold (750). Visible features include round chronograph pushers and a signed Rolex Oyster screw-down crown. The case was produced by Spillmann, indicated by the 'hammer head' hallmark 136.
- Movement and Reported Specifications
- The timepiece is powered by a manual-wind Calibre 23 movement signed by Rolex. The movement is distinguished by a 'ROW' engraving located on the balance bridge. The watch is fitted with a leather strap finished with a signed gold-plated pin buckle. The condition report indicates that the movement and chronograph are functional, but recommends a standard service.
Identification
- Reference
- 4500
- Serial number
- 418846
- 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: Movement caliber and case back interior are not shown in the lot photograph.
- Research required: Case maker hallmark, reference number, and movement engravings are source-reported and not directly visible.