Valjoux 72
ProbableThe ébauche behind the manual-wind Rolex Daytona and a great many other chronographs of the period. Rolex's own designations (722, 722-1, 727) denote its modified executions.
Specifications
- Movement manufacturer
- Valjoux
- Frequency
- 18,000 vph (2.50 Hz)
- Jewels
- 17
- Winding
- manual
- Complications
- Chronograph · Small seconds · 30-minute counter · 12-hour counter
Architecture
Manual-wind column-wheel chronograph with three registers.
References using this caliber
- Rolex 6238Factory
Daytona · Whole production
- TAG Heuer 2447Factory
Carrera · Whole production
- TAG Heuer 2446Factory
Autavia · Whole production
- Universal Genève 885103Factory
Compax · 1964–1967
Provenance of this record
Sources & Evidence
Secondary sourceCollector research
Ranfft Watch Movement Archive
Dr. Roland Ranfft (archived and maintained by volunteers)
- Accessed
- 2026-08-18
Cited for
This referenceProbable
Secondary sourceSpecialist publication
Dowling, James M. & Hess, Jeffrey P. — The Best of Time: Rolex Wristwatches
Schiffer Publishing
- Published
- 2006-01-01
Cited for
This referenceHigh confidence
Last verified: Not yet reviewed