CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeLongines 992.1 — Heritage family: 2 calibers, 1 sourced lineage link.Drag to explore.
accepteddisputed

movement

Longines 992.1

Longinesarchive filingintroduced 1977design:longines-992-1compare specs · 2

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 992.1
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 992.1 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.

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-992-1/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
25—staged
Seconds display
disp.seconds_display
central—staged
Movement diameter
geom.diameter_mm
25.6 mm—staged
Movement height
geom.height_mm
2.95 mm—staged
Frequency
osc.frequency_vph
28800 vph—staged
Shock protection
osc.shock_protection
kifexample movement, 1977staged
Power reserve (typical)
power.reserve_typical_h
40 h—staged
Introduced
prod.intro_year
1977—staged
Hacking seconds
wind.has_hacking_seconds
yes—staged
Winding mode
wind.mode
automatic—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.

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

  1. 1
    Internet Archive
    https://web.archive.org/web/20171031000850/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&144&2uswk&Longines_992_1
    archivetier 2retrieved 2017-10-3111 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20230901160516/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Lemania_8816
    archivetier 2retrieved 2023-09-011 fact on this page