CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.

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.

Open the full family view →

movement

Gruen 335

maker not sourcedintroduced 1940design:gruen-335compare specs
bounding evidence — no range is drawn on the era axis
not after 1950
a dated example movement, ca. 1945 (+5 yr, the source says “circa”)“ca. 1945: 612095, GXC, Gruen Watch Co, Precision, Switzerland, Veri-Thin Patented, 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
Gruen 335
movement
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any Gruen 335 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:gruen-335/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
17—staged
Movement shape
build.shape
rectangular—staged
Seconds display
disp.seconds_display
small—staged
Movement height
geom.height_mm
4 mm—staged
Frequency
osc.frequency_vph
18000 vph—staged
Power reserve (typical)
power.reserve_typical_h
37 h—staged
Discontinued
prod.discontinued_year
1948—staged
Introduced
prod.intro_year
1940—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 · 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

Gruen family/generations block
authority: ranfft8 members

Sources

  1. 1
    Internet Archive
    https://web.archive.org/web/20181107155110/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Gruen_335
    archivetier 2retrieved 2018-11-0711 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20181107155121/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Gruen_335N
    archivetier 2retrieved 2018-11-071 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20210131012919/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Gruen_335R
    archivetier 2retrieved 2021-01-311 fact on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20230605062652/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&Gruen_440
    archivetier 2retrieved 2023-06-051 fact on this page