Family line
A. Lange & Söhne L121.1
This profile traverses clone_of · derived_from · design_imitation_of · ebauche_of · incorporates_module · 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.
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 L121.1 | successor of related | design:lange-l901-0 | accepted | Replaced the L901.0 in the Lange 1 from 2015; same 38.5 mm case, same dial layout, same 72 h from twin barrels. What changed: balance position, plate architecture, gear train, oscillator and date switching. |
Sources
- 1Monochrome Watcheshttps://monochrome-watches.com/comparing-the-old-and-the-new-a-lange-sohne-lange-1-live-pics-specs-price/presstier 2retrieved 2026-08-241 fact on this page
- 2Monochrome Watcheshttps://monochrome-watches.com/in-depth-ultimate-guide-to-the-a-lange-sohne-lange-1-collection-incl-video/presstier 2retrieved 2026-08-241 fact on this page