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:zenith-4021/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
Zenith 4021 El Primero
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
Zenith 4021 El Primero
movementproducer: Zenitharchive filing
IIDesignations — 0 names
No designation is recorded for this design yet.
IIIExecutions — 1 article
No source in this corpus states which grade any Zenith 4021 El Primero 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 |
|---|---|---|---|---|
Jewels build.jewel_count | 39 | — | staged | |
Seconds display disp.seconds_display | small | — | staged | |
Movement diameter geom.diameter_mm | 30 mm | — | staged | |
Movement height geom.height_mm | 7.75 mm | — | staged | |
Frequency osc.frequency_vph | 36000 vph | — | staged | |
Shock protection osc.shock_protection | kif | example movement, 1990 | staged | |
Power reserve (typical) power.reserve_typical_h | 50 h | — | staged | |
Introduced prod.intro_year | 2005 | — | staged | |
Winding mode wind.mode | automatic | — | staged |
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
7
models
1
brands
7
grade unknown
grain 7 reference — every record here sits at the same level, so the count is one kind of thing.
- Zenith7 modelsmodel:zenith/03-2080-4021-01-c494model:zenith/03-2080-4021-21-c496model:zenith/03-2080-4021-21-m2040model:zenith/03-2085-4021-51-c700model:zenith/18-2080-4021-01-c494model:zenith/51-2080-4021-01-c494model:zenith/95-2080-4021-51-c700
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
- 1Internet Archivehttps://web.archive.org/web/20181108105630/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Zenith_4021archivetier 2retrieved 2018-11-0810 facts on this page