CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeETA 2471 — Heritage family: 14 calibers, 13 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 ofébauche ofébauche ofébauche ofébauche ofébauche ofébauche ofébauche ofCortebert 270 (ETA 2451) — open caliber pageCortebert 270 (ETA 2451)—maker not sourced1 exec · grade ?Doxa 115 (ETA 2451) — open caliber pageDoxa 115 (ETA 2451)—maker not sourc…1 exec · grade ?Dugena 1007 (ETA 2451, ETA 2459, ETA 2471) — open caliber pageDugena 1007 (ETA 2451, ETA 2459…—maker not sourced1 exec · grade ?Dugena 3315 (ETA 2471) — open caliber pageDugena 3315 (ETA 2471)—maker not sourc…1 exec · grade ?ETA 2451 — open caliber pageETA 2451—ETA SA Manufacture Horlogère…1 exec · grade ?ETA 2459 — open caliber pageETA 2459—ETA SA Manufacture Horlogère…1 exec · grade ?ETA 2471 — the caliber this page is aboutETA 2471—ETA SA Manufacture Horlogère…1 exec · grade ?Hamilton 63 (ETA 2451) — open caliber pageHamilton 63 (ETA 2451)—maker not sourc…1 exec · grade ?Hamilton 63A (ETA 2451) — open caliber pageHamilton 63A (ETA 2451)—maker not sourc…1 exec · grade ?Hamilton 689 (ETA 2451) — open caliber pageHamilton 689 (ETA 2451)—maker not sourc…1 exec · grade ?Junghans 651.00 (ETA 2451) — open caliber pageJunghans 651.00 (ETA 245…1963maker not sourced1 exec · grade ?Junghans 651.10 (ETA 2451) — open caliber pageJunghans 651.10 (ETA 245…1963maker not sourced1 exec · grade ?Juvenia 662 (ETA 2451) — open caliber pageJuvenia 662 (ETA 2451)—maker not sourc…1 exec · grade ?Movado 600 (ETA 2471) — open caliber pageMovado 600 (ETA 247…1960maker not sourced1 exec · grade ?
accepteddisputed
Sense of “family”Heritage · 14Everything (debug) · 14Parts cluster (Jules Borel sense) · 1Manufacturer-internal (Ranfft sense) · 1Based-on star (WatchBase sense) · 14Open the full family view →

movement

ETA 2471

ETA SA Manufacture Horlogère Suissearchive filingyear not sourceddesign:eta-2471compare specs · 4
bounding evidence — no range is drawn on the era axis
not after 1970
a dated example movement, ca. 1965 (+5 yr, the source says “circa”)“ca. 1965: Swiss Made, 25 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
ETA 2471
movementproducer: ETA SA Manufacture Horlogère Suissearchive filing
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any ETA 2471 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:eta-2471/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
17Ranfft data sheet, the 17-jewel member of its 17/21/25 rangestaged
Jewels
build.jewel_count
21Ranfft data sheet, the 21-jewel member of its 17/21/25 rangestaged
Jewels
build.jewel_count
25Ranfft data sheet, the 25-jewel member of its 17/21/25 rangestaged
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
5.3 mm—staged
Frequency
osc.frequency_vph
18000 vph—staged
Shock protection
osc.shock_protection
incablocexample movement, 1965staged
Power reserve (typical)
power.reserve_typical_h
42 h—staged
Winding mode
wind.mode
automatic—staged

Where a property carries more than one value, the values have different scopes — an official spec sheet and observed hardware, say. Different scopes are not a disagreement, so both are accepted and both are shown with the scope they apply to.

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.

Curated family labels

ETA family/generations block
authority: ranfft38 members

Sources

  1. 1
    Internet Archive
    https://web.archive.org/web/20210121122051/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_2471
    archivetier 2retrieved 2021-01-2113 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20191119131846/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_2393
    archivetier 2retrieved 2019-11-191 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20220129125141/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2451&
    archivetier 2retrieved 2022-01-291 fact on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20230514022549/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2472
    archivetier 2retrieved 2023-05-141 fact on this page
  5. 5
    Internet Archive
    https://web.archive.org/web/20231104114003/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2452&
    archivetier 2retrieved 2023-11-041 fact on this page
  6. 6
    Internet Archive
    https://web.archive.org/web/20181106123456/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Cortebert_270
    archivetier 2retrieved 2018-11-061 fact on this page
  7. 7
    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
  8. 8
    Internet Archive
    https://web.archive.org/web/20230906224912/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_1007&
    archivetier 2retrieved 2023-09-063 facts on this page
  9. 9
    Internet Archive
    https://web.archive.org/web/20230907030240/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_3315&
    archivetier 2retrieved 2023-09-071 fact on this page
  10. 10
    Internet Archive
    https://web.archive.org/web/20181107162816/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Hamilton_63
    archivetier 2retrieved 2018-11-071 fact on this page
  11. 11
    Internet Archive
    https://web.archive.org/web/20181107162839/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Hamilton_63A
    archivetier 2retrieved 2018-11-071 fact on this page
  12. 12
    Internet Archive
    https://web.archive.org/web/20181107163008/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Hamilton_689
    archivetier 2retrieved 2018-11-071 fact on this page
  13. 13
    Internet Archive
    https://web.archive.org/web/20181107174351/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Junghans_651_00
    archivetier 2retrieved 2018-11-071 fact on this page
  14. 14
    Internet Archive
    https://web.archive.org/web/20220816080948/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&136&2uswk&Junghans_651_10
    archivetier 2retrieved 2022-08-161 fact on this page
  15. 15
    Internet Archive
    https://web.archive.org/web/20171030231209/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&131&2uswk&Juvenia_662
    archivetier 2retrieved 2017-10-301 fact on this page
  16. 16
    Internet Archive
    https://web.archive.org/web/20171031004315/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&152&2uswk&Movado_600
    archivetier 2retrieved 2017-10-311 fact on this page