Heuer Carrera Reference 3647T
Record status
Individual type · partial
Period
1960s
The Heuer Carrera Reference 3647T, also identified as the Carrera 45, is a mid-century wristwatch chronograph. The design features a silver-colored dial with baton markers and two subsidiary registers, including a 45-minute register located at the 3 o'clock position.
A tachymeter track is printed in red on the dial's tension ring. The watch is powered by a Valjoux 92 manual-wind movement, which omits an hour register to promote dial legibility. The 36mm case, which incorporates angular lugs with beveled edges, was produced by the manufacturer Piquerez. The dial itself is credited to the producer Singer. The watch is presented on a black perforated leather strap.
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
- Maker
- Heuer
- Movement
- Valjoux 92
- Case Size
- 36mm
- Reference
- 3647T
- Tachymeter
- Red
- Place recorded
- Switzerland
- Case Manufacturer
- Piquerez
- Dial Manufacturer
- Singer
- Maker / attribution
- Heuer
Design
- Visible features
- • Red tachymeter scale printed on the outer tension ring • Two-register dial layout with baton indices • Angular lugs with sharp bevels • T-Swiss marking located at the bottom of the dial
- Case and Movement
- The watch is housed in a 36mm stainless steel case characterized by sharply beveled lugs. The production of the case is attributed to the manufacturer Piquerez. Internally, the watch operates using a Valjoux 92 movement. This manual-wind caliber is described as a derivative of the Valjoux 72 movement, sharing its architecture but excluding the hour register functionality found in the latter.
- Design Philosophy
- The Carrera line was developed under the direction of Jack Heuer, who sought to modernize the company's chronograph offerings. The design process prioritized extreme legibility and a minimalist aesthetic, removing unnecessary information to provide only essential data to the wearer. The dial components for these watches were sourced from Singer, an external supplier who also provided dials to other major watch brands of the era.
- Dial and Configuration
- The Carrera 3647T utilizes a two-register dial configuration, which the source refers to as the Carrera 45. This designation derives from the 45-minute register positioned at the 3 o'clock mark. The dial features a silver base color with applied baton markers and printed text, including the Heuer logo. A 'T Swiss' marking is present at the base of the dial. A distinctive design element of this reference is the inclusion of a tension ring around the dial perimeter. This ring serves as the substrate for a tachymeter scale printed in red. The lack of an hour register is noted as a specific design choice intended to enhance the overall legibility of the timepiece.
Identification
- Reference
- 3647T
- 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: Exact production year within the 1960s is not specified
- Research required: Authenticity of the specific strap and crown is not addressed in the source text