A. Lange & Söhne L901.0
High confidenceThe caliber of the original Lange 1, and one of the four watches with which the refounded company launched in 1994. Its asymmetric layout is not styling: the outsize date's two discs need the space, and the dial's arrangement follows from the movement rather than the other way round.
Specifications
- Movement manufacturer
- A. Lange & Söhne
- Production
- 1994–?
- Frequency
- 21,600 vph (3 Hz)
- Jewels
- 53
- Power reserve
- 72 hours
- Winding
- manual
- Complications
- Outsize date · Power reserve · Small seconds
Architecture
Manually wound caliber with an outsize date, off-centre time display and a power-reserve indication, in untreated German silver with a hand-engraved balance cock, screwed gold chatons and blued screws.
Related calibers
Succeeded by
A. Lange & Söhne L121.1
References using this caliber
- A. Lange & Söhne 101.021Factory
Lange 1 · Whole production
Provenance of this record
Sources & Evidence
Primary sourceManufacturer documentation
A. Lange & Söhne — collection and caliber specifications
Lange Uhren GmbH, Glashütte
- Accessed
- 2026-08-18
Cited for
This referenceHigh confidence
Last verified: Not yet reviewed