CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeBenrus GH4 (Valjoux 71) — Heritage family: 2 calibers, 1 sourced lineage link.Drag to explore.
accepteddisputed

movement

Benrus GH4 (Valjoux 71)

maker not sourced⟨1950 or earlier⟩ range onlydesign:benrus-gh4compare specs · 2
⟨1950 or earlier⟩ range only — no source gives an introduction yearread from sources · staged
not after 1950
a dated example movement, ca. 1945 (+5 yr, the source says “circa”)“ca. 1945: 2035, AXZ, Benrus Watch Co, Model GH4, Swiss, 17 Jewels”

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
Benrus GH4 (Valjoux 71)
movement
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any Benrus GH4 (Valjoux 71) 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:benrus-gh4/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
17—staged
Chronograph
cmpl.has_chronograph
yes—staged
Seconds display
disp.seconds_display
small—staged
Movement diameter
geom.diameter_mm
31.3 mm—staged
Frequency
osc.frequency_vph
18000 vph—staged
Power reserve (typical)
power.reserve_typical_h
40 h—staged
Winding mode
wind.mode
manual—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 · 1

Where this construction came from. Read up the arrows.

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

  1. 1
    Internet Archive
    https://web.archive.org/web/20181106111849/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Benrus_GH4
    archivetier 2retrieved 2018-11-069 facts on this page