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:minerva-50/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
Minerva 50
⟨1950 or earlier⟩ range only — no source gives an introduction yearread from sources · staged
not after 1950
a dated example movement, 1950“1950: Minerva, Pontiac, P.101 - Minerva (RFV with arrow, Robert Frères, Villeret), Depose; Incabloc”
not after 1950
a dated example movement, 1950“1950: Minerva, Pontiac, P.101 - Minerva (RFV with arrow, Robert Frères, Villeret), Depose; Incabloc”
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
Minerva 50
movementproducer: Minervaarchive filing
IIDesignations — 0 names
No designation is recorded for this design yet.
IIIExecutions — 1 article
No source in this corpus states which grade any Minerva 50 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 | 16 | Ranfft data sheet, the 16-jewel member of its 16/17 range | staged | |
Jewels build.jewel_count | 17 | Ranfft data sheet, the 17-jewel member of its 16/17 range | staged | |
Date display disp.date_display_type | pointer | — | staged | |
Date disp.has_date | yes | — | staged | |
Seconds display disp.seconds_display | small | — | staged | |
Casing diameter geom.casing_diameter_mm | 24 mm | — | staged | |
Movement diameter geom.diameter_mm | 23.6 mm | — | staged | |
Movement height geom.height_mm | 4.25 mm | — | staged | |
Frequency osc.frequency_vph | 18000 vph | — | staged | |
Shock protection osc.shock_protection | incabloc | example movement, 1950 | staged | |
Power reserve (typical) power.reserve_typical_h | 42 h | — | staged | |
Winding mode wind.mode | manual | — | staged |
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 · 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.
Curated family labels
Minerva family/generations block
authority: ranfft3 members
Sources
- 1Internet Archivehttps://web.archive.org/web/20171031002703/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&148&2uswk&Minerva_50archivetier 2retrieved 2017-10-3115 facts on this page
- 2Internet Archivehttps://web.archive.org/web/20171031002659/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&148&2uswk&Minerva_48archivetier 2retrieved 2017-10-312 facts on this page
- 3Internet Archivehttps://web.archive.org/web/20171031002701/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&148&2uswk&Minerva_49archivetier 2retrieved 2017-10-311 fact on this page