CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeDoxa 103 (ETA 2391) — Heritage family: 7 calibers, 6 sourced lineage links.Drag to explore.
100%overlaydrag to pan · hover a caliber to isolate its line · scroll the page normallyopen the full family view →
ébauche ofébauche ofébauche ofébauche ofébauche ofébauche ofCortebert 266 (ETA 2391) — open caliber pageCortebert 266 (ETA 2391)—maker not sourced1 exec · grade ?Doxa 103 (ETA 2391) — the caliber this page is aboutDoxa 103 (ETA 2391)—maker not sourc…1 exec · grade ?Dugena 3313 (ETA 2391) — open caliber pageDugena 3313 (ETA 2391)—maker not sourc…1 exec · grade ?ETA 2391 — open caliber pageETA 2391—ETA SA Manufacture Horlogère…1 exec · grade ?Hamilton 61 (ETA 2391) — open caliber pageHamilton 61 (ETA 2391)—maker not sourc…1 exec · grade ?Hamilton 75S (ETA 2391) — open caliber pageHamilton 75S (ETA 2391)—maker not sourc…1 exec · grade ?Movado 290 (ETA 2391) — open caliber pageMovado 290 (ETA 239…1960maker not sourced1 exec · grade ?
accepteddisputed
Sense of “family”Heritage · 7Everything (debug) · 7Parts cluster (Jules Borel sense) · 1Manufacturer-internal (Ranfft sense) · 1Based-on star (WatchBase sense) · 7Open the full family view →

movement

Doxa 103 (ETA 2391)

maker not sourced⟨1955 or earlier⟩ range onlydesign:doxa-103compare specs · 2
⟨1955 or earlier⟩ range only — no source gives an introduction yearread from sources · staged
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: Doxa, 11 1/2, 103, Doxa S.A., Swiss Made - Patented”
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: Doxa, 11 1/2, 103, Doxa S.A., Swiss Made - Patented”
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: Doxa, 11 1/2, 103, Doxa S.A., Swiss Made - Patented”

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
Doxa 103 (ETA 2391)
movement
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any Doxa 103 (ETA 2391) 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:doxa-103/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
17—staged
Seconds display
disp.seconds_display
central—staged
Casing diameter
geom.casing_diameter_mm
26 mm—staged
Movement diameter
geom.diameter_mm
25.6 mm—staged
Movement height
geom.height_mm
3.6 mm—staged
Frequency
osc.frequency_vph
18000 vph—staged
Power reserve (typical)
power.reserve_typical_h
47 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.

Curated family labels

Doxa family/generations block
authority: ranfft6 members

Sources

  1. 1
    Internet Archive
    https://web.archive.org/web/20181106131614/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Doxa_103
    archivetier 2retrieved 2018-11-0611 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20171030175744/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&45&2uswk&Doxa_118
    archivetier 2retrieved 2017-10-301 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20181106131620/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Doxa_104
    archivetier 2retrieved 2018-11-062 facts on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20190820095625/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Doxa_115
    archivetier 2retrieved 2019-08-201 fact on this page
  5. 5
    Internet Archive
    https://web.archive.org/web/20181106131640/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Doxa_117
    archivetier 2retrieved 2018-11-061 fact on this page
  6. 6
    Internet Archive
    https://web.archive.org/web/20181106123438/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Cortebert_266
    archivetier 2retrieved 2018-11-061 fact on this page
  7. 7
    Internet Archive
    https://web.archive.org/web/20200928174129/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&b&2uswk&Dugena_3313
    archivetier 2retrieved 2020-09-281 fact on this page
  8. 8
    Internet Archive
    https://web.archive.org/web/20181107162646/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Hamilton_61
    archivetier 2retrieved 2018-11-071 fact on this page
  9. 9
    Internet Archive
    https://web.archive.org/web/20181107163225/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Hamilton_75S
    archivetier 2retrieved 2018-11-071 fact on this page
  10. 10
    Internet Archive
    https://web.archive.org/web/20171031003941/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&151&2uswk&Movado_290
    archivetier 2retrieved 2017-10-311 fact on this page