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:unitas-231/unknown
accepteddisputed
movement
Unitas 231
Fabrique d'Ebauches Unitas SAarchive filing⟨1945 or earlier⟩ range onlydesign:unitas-231compare specs · 2
⟨1945 or earlier⟩ range only — no source gives an introduction yearread from sources · staged
not after 1945
a dated example movement, ca. 1940 (+5 yr, the source says “circa”)“1-2) ca. 1940: 273 - UT (Unitas)”
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
Unitas 231
movementproducer: Fabrique d'Ebauches Unitas SAarchive filing
IIDesignations — 0 names
No designation is recorded for this design yet.
IIIExecutions — 1 article
No source in this corpus states which grade any Unitas 231 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 | 15 | — | staged | |
Seconds display disp.seconds_display | small | — | staged | |
Casing diameter geom.casing_diameter_mm | 41.65 mm | — | staged | |
Movement diameter geom.diameter_mm | 41 mm | — | staged | |
Movement height geom.height_mm | 5.3 mm | — | staged | |
Frequency osc.frequency_vph | 18000 vph | — | staged | |
Power reserve (typical) power.reserve_typical_h | 41 h | — | staged | |
Winding mode wind.mode | manual | — | 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 · 1
What came from it — revisions, variants, clones, licensed copies.
- Alpina 273 new (Unitas 231)ébauche of
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.
Curated family labels
Unitas family/generations block
authority: ranfft71 members
Sources
- 1Internet Archivehttps://web.archive.org/web/20230902003221/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Unitas_231archivetier 2retrieved 2023-09-0211 facts on this page
- 2Internet Archivehttps://web.archive.org/web/20230902003301/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Unitas_255archivetier 2retrieved 2023-09-021 fact on this page
- 3Internet Archivehttps://web.archive.org/web/20230902003310/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Unitas_257archivetier 2retrieved 2023-09-021 fact on this page
- 4Internet Archivehttps://web.archive.org/web/20230902003318/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Unitas_259archivetier 2retrieved 2023-09-021 fact on this page
- 5Internet Archivehttps://web.archive.org/web/20191014174414/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Alpina_273_neuarchivetier 2retrieved 2019-10-141 fact on this page