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:alpina-271/unknown
accepteddisputed
movement
Alpina 271 (Unitas 83)
⟨1925 or earlier⟩ range only — no source gives an introduction yearread from sources · staged
not after 1925
a dated example movement, ca. 1920 (+5 yr, the source says “circa”)“ca. 1920: Alpina 271 - 138275”
not after 1925
a dated example movement, ca. 1920 (+5 yr, the source says “circa”)“ca. 1920: Alpina 271 - 138275”
not after 1925
a dated example movement, ca. 1920 (+5 yr, the source says “circa”)“ca. 1920: Alpina 271 - 138275”
not after 1925
a dated example movement, ca. 1920 (+5 yr, the source says “circa”)“ca. 1920: Alpina 271 - 138275”
not after 1925
a dated example movement, ca. 1920 (+5 yr, the source says “circa”)“ca. 1920: Alpina 271 - 138275”
not after 1925
a dated example movement, ca. 1920 (+5 yr, the source says “circa”)“ca. 1920: Alpina 271 - 138275”
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
Alpina 271 (Unitas 83)
movement
IIDesignations — 0 names
No designation is recorded for this design yet.
IIIExecutions — 1 article
No source in this corpus states which grade any Alpina 271 (Unitas 83) 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 | 7 | Ranfft data sheet, the 7-jewel member of its 7/15 range | staged | |
Jewels build.jewel_count | 15 | Ranfft data sheet, the 15-jewel member of its 7/15 range | staged | |
Seconds display disp.seconds_display | small | — | staged | |
Movement diameter geom.diameter_mm | 36.7 mm | — | staged | |
Movement height geom.height_mm | 4.9 mm | — | staged | |
Frequency osc.frequency_vph | 18000 vph | — | staged | |
Power reserve (typical) power.reserve_typical_h | 34 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 · 1
Where this construction came from. Read up the arrows.
- Unitas 83ébauche of
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.
Sources
- 1Internet Archivehttps://web.archive.org/web/20181106092809/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Alpina_271archivetier 2retrieved 2018-11-0610 facts on this page
- 2Internet Archivehttps://web.archive.org/web/20181108080536/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Unitas_143archivetier 2retrieved 2018-11-081 fact on this page
- 3Internet Archivehttps://web.archive.org/web/20230902003001/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Unitas_144archivetier 2retrieved 2023-09-021 fact on this page
- 4Internet Archivehttps://web.archive.org/web/20191216061517/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a&2uswk&Alpina_272archivetier 2retrieved 2019-12-161 fact on this page
- 5Internet Archivehttps://web.archive.org/web/20181108085019/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Unitas_84archivetier 2retrieved 2018-11-081 fact on this page
- 6Internet Archivehttps://web.archive.org/web/20181106092924/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Alpina_279archivetier 2retrieved 2018-11-061 fact on this page