A. Lange & Söhne DATOGRAPH PERPETUAL TOURBILLON - 740.056
740.056 Historical / ownership-only
Licensed benchmark ownership-only historical identity
Case
direct Dimensions and fit
Case length41.5 mm
Case width / diameter41.5 mm
Case thickness14.6 mm
Lug-to-lugNot recorded
Lug widthNot recorded
Water resistanceNot recorded
The dimension basis is not currently recorded.
Open dimension source ↗Movement
ManualCalibre and mechanism
CalibreA. Lange & Söhne L952.2
Normalized calibreALANGESHNEL9522
GenerationNot recorded
Power reserve50 h
Technical data
Not applicable Conventional winding
This movement is not assigned a motor-winder programme in the Watch Library.
Conventional winding fields are evidence-linked reference data. They are separate from any device-specific axial-control profile.
Market context
Date not recordedMarket-value disposition
No exact-reference public market estimate has been admitted for this record.
Market observations are separate from manufacturer specifications and are not used to fill technical gaps.