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-431/unknown
accepteddisputed
movement
Unitas 431
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 431
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 431 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 | 17 | — | accepted | |
Jewels build.jewel_count | 15 | Ranfft data sheet, the 15-jewel member of its 15/17 range | accepted | |
Jewels build.jewel_count | 17 | Ranfft data sheet, the 17-jewel member of its 15/17 range | accepted | |
Seconds display disp.seconds_display | small | — | staged | |
Lift angle esc.lift_angle_deg | 43 deg | — | accepted | |
Casing diameter geom.casing_diameter_mm | 41.65 mm | — | staged | |
Movement diameter geom.diameter_mm | 41.7 mm | — | accepted | |
Movement diameter geom.diameter_mm | 41 mm | — | accepted | |
Movement height geom.height_mm | 4.7 mm | — | accepted | |
Swiss movement origin.swiss_movement | yes | — | accepted | |
Frequency osc.frequency_vph | 18000 vph | — | staged | |
Shock protection osc.shock_protection | other | example movement, 1945 | staged | |
Power reserve (typical) power.reserve_typical_h | 41 h | — | accepted | |
Hacking seconds wind.has_hacking_seconds | no | — | accepted | |
Winding mode wind.mode | manual | — | accepted | |
Winding mode wind.mode | manual | — | accepted |
Where a property carries more than one value, the values have different scopes — an official spec sheet and observed hardware, say. Different scopes are not a disagreement, so both are accepted and both are shown with the scope they apply to.
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.
- Dugena 276 (Unitas 431)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/20181108082725/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Unitas_431archivetier 2retrieved 2018-11-0811 facts on this page
- 2Caliber Cornerhttps://calibercorner.com/unitas-caliber-431curated dbtier 2retrieved 2026-09-088 facts on this pagecited, never crawled
- 3Internet Archivehttps://web.archive.org/web/20230902003221/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Unitas_231archivetier 2retrieved 2023-09-021 fact on this page
- 4Internet 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
- 5Internet 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
- 6Internet 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
- 7Internet Archivehttps://web.archive.org/web/20181106134132/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Dugena_276archivetier 2retrieved 2018-11-061 fact on this page