unknownsynthetic
evidence: unknown
no source states which grade this article was bought at — this row exists so 'unknown' stays countable instead of becoming an assumption
exec:lange-l051-1/unknown
Family tree · none recorded
No lineage link to any other caliber is recorded for this design under the Heritage profile. That is a gap in the research, not a claim that none exists.
movement
A. Lange & Söhne L051.1
Identity
A caliber is three separate things and this reference keeps them apart: the construction, the names it is sold under, and the article a brand actually bought. A watch model points at an execution — never at a bare construction — which is why “same caliber” is almost never a complete answer.
IDesign — the construction
A. Lange & Söhne L051.1
movementproducer: A. Lange & Söhne
IIDesignations — 0 names
No designation is recorded for this design yet.
IIIExecutions — 1 article
No source in this corpus states which grade any A. Lange & Söhne L051.1 was bought at. That unknown is stored as a real row rather than left blank, so it can be counted, filtered and excluded from any comparison that would otherwise assume parity.
Specifications
| Property | Value | Scope | Status | Sources |
|---|---|---|---|---|
Total components build.component_count | 188 | — | accepted | |
Swiss movement origin.swiss_movement | no | — | accepted | |
Frequency osc.frequency_vph | 21600 vph | — | accepted | |
Power reserve (typical) power.reserve_typical_h | 55 h | — | accepted | |
Product family prod.family_name | 1815 | — | accepted | |
Caliber supply type prod.supply_type | in_house | — | accepted | |
Winding mode wind.mode | manual | — | accepted |
Lineage
The same relationships as the tree at the top of this page, with their sources. An absence in a column means no source stated one.
Ancestors · 0
Where this construction came from. Read up the arrows.
None recorded. An absence here means no source stated one, not that none exists.
Descendants · 0
What came from it — revisions, variants, clones, licensed copies.
None recorded. An absence here means no source stated one, not that none exists.
Related · 0
Stored in a different table from descent. A successor is not a child.
None recorded. An absence here means no source stated one, not that none exists.
Used by
1
models
1
brands
1
grade unknown
grain 1 reference — every record here sits at the same level, so the count is one kind of thing.
- A. Lange & Söhne1 modelmodel:a-lange-sohne/1815
Every brand here is on the strength of a source that names a watch and states this movement. Brands that use this caliber and nobody has sourced yet are absent — this is what has been researched, not what exists.
Sources
- 1alange-soehne.comhttps://www.alange-soehne.com/us-en/manufacture/art-of-watchmaking/manufacture-movementsmanufacturertier 1retrieved 2026-08-243 facts on this page
- 2alange-soehne.comhttps://www.alange-soehne.com/us-en/timepieces/1815/1815/1815-in-750-pink-gold-235-032manufacturertier 1retrieved 2026-08-245 facts on this page