Family line
A. Lange & Söhne L951.1
This profile traverses clone_of · derived_from · ebauche_of · licensed_copy_of · module_on · revision_of · tooling_transfer_of · variant_of and keeps disputed edges. Every edge in this view carries at least one reference.
Same caliber, other senses of “family”Everything (debug) · 3 calibersParts cluster (Jules Borel sense) · 1 calibersManufacturer-internal (Ranfft sense) · 2 calibersBased-on star (WatchBase sense) · 3 calibers
Edge types in this family
accepteddisputedcontested region
Generations run left to right, ancestors first, and the axis along the top is ordinal rather than linear: each band is one generation, labelled with the range of sourced introduction years it contains. A band reads “—” when no caliber in it has a year anyone published — the gap is the finding, not a rendering failure. Dotted arcs above and below the drawing are related edges — successor, drop-in, no-derivation — which are stored in a different table from lineage and can never form part of an ancestry path.
Every edge in this view
| Caliber | Relationship | To | Status | Detail | Sources |
|---|---|---|---|---|---|
| A. Lange & Söhne L951.5 | derived from lineage | A. Lange & Söhne L951.1 | accepted | component delta: calendar_mechanism | |
| A. Lange & Söhne L951.6 | revision of lineage | A. Lange & Söhne L951.1 | accepted | interchange note: Chronograph architecture carried over unchanged (column wheel, lateral clutch, flyback, precisely jumping minute counter, 18,000 vph); the start/stop and reset levers were subtly revised. Part count rises 405 → 451, largely for the added power-reserve indication. · component delta: barrel,mainspring,balance_wheel,balance_spring,regulation_method | |
| design:lange-l156-1 | no derivation between related | A. Lange & Söhne L951.1 | accepted | A different chronograph architecture, not a rotor-equipped Datograph: the L156.1 uses a vertical clutch and a dynamic reset-to-zero driven by a heart cam on the minute wheel, where the L951.x uses a lateral clutch. |
Sources
- 1alange-soehne.comhttps://www.alange-soehne.com/us-en/timepieces/1815/1815-chronograph/1815-chronograph-in-750-white-gold-414-026manufacturertier 1retrieved 2026-08-241 fact on this page
- 2Monochrome Watcheshttps://monochrome-watches.com/a-lange-and-sohne-odysseus-chronograph-hands-on-review-specs-price/presstier 2retrieved 2026-08-242 facts on this page
- 3alange-soehne.comhttps://www.alange-soehne.com/us-en/manufacture/news-and-events/25-years-of-datographmanufacturertier 1retrieved 2026-08-241 fact on this page
- 4Monochrome Watcheshttps://monochrome-watches.com/in-depth-retrospective-a-lange-sohne-datograph-1999-until-now-complete-history-review-datograph-up-down-25th-anniversary/presstier 2retrieved 2026-08-241 fact on this page