Technical Profile
Architecture and specifications
Movement typeManual
Frequency21,600 vph
Power reserve72 h
Jewels43
ComplicationsBig date, power reserve
ArchitectureManufacture
Reliability profileHigh horology
Service accessSpecialist
TimeHunter Analysis
Collector context
Lange 1 calibre with twin mainspring barrels. Evaluate the complete watch rather than the calibre in isolation: condition, regulation, service history and correct parts materially affect ownership quality.
A famous calibre can add historical interest, but maintenance condition remains more important than reputation alone.