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:longines-280/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
Longines 280
bounding evidence — no range is drawn on the era axis
not after 1964
a dated example movement, 1964“1964: 12655379, Longines, Swiss, 17 Jewels - Longines; Incabloc”
not after 1964
a dated example movement, 1964“1964: 12655379, Longines, Swiss, 17 Jewels; 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
Longines 280
movementproducer: Longinesarchive filing
IIDesignations — 0 names
No designation is recorded for this design yet.
IIIExecutions — 1 article
No source in this corpus states which grade any Longines 280 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 | |
Seconds display disp.seconds_display | central | — | staged | |
Lift angle esc.lift_angle_deg | 50 deg | — | accepted | |
Movement diameter geom.diameter_mm | 26.5 mm | — | accepted | |
Movement height geom.height_mm | 3.9 mm | — | accepted | |
Swiss movement origin.swiss_movement | yes | — | accepted | |
Frequency osc.frequency_vph | 19800 vph | — | accepted | |
Shock protection osc.shock_protection | incabloc | example movement, 1964 | staged | |
Power reserve (typical) power.reserve_typical_h | 42 h | — | accepted | |
Winding mode wind.mode | manual | — | accepted |
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
Longines family/generations block
authority: ranfft4 members
Sources
- 1Internet Archivehttps://web.archive.org/web/20210922234319/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&Longines_280archivetier 2retrieved 2021-09-2211 facts on this page
- 2Caliber Cornerhttps://calibercorner.com/longines-caliber-280curated dbtier 2retrieved 2026-09-088 facts on this pagecited, never crawled
- 3Internet Archivehttps://web.archive.org/web/20171030235943/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&142&2uswk&Longines_284archivetier 2retrieved 2017-10-301 fact on this page
- 4Internet Archivehttps://web.archive.org/web/20230901163207/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Longines_281archivetier 2retrieved 2023-09-012 facts on this page
- 5Internet Archivehttps://web.archive.org/web/20231210160209/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&Longines_285archivetier 2retrieved 2023-12-101 fact on this page