CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeJunghans 651.00 (ETA 2451) — 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 — open caliber pageETA 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) — the caliber this page is aboutJunghans 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

Junghans 651.00 (ETA 2451)

maker not sourcedintroduced 1963design:junghans-651-00compare specs · 2
bounding evidence — no range is drawn on the era axis
not after 1965
a dated example movement, 1965“1965: ETA 2451, Junghans 651 - Patented; Junghans-II”
not after 1970
a dated example movement, ca. 1965 (+5 yr, the source says “circa”)“ca. 1965: ETA 2451, Junghans 651 - Patented; Junghans-II”

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
Junghans 651.00 (ETA 2451)
movement
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any Junghans 651.00 (ETA 2451) 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:junghans-651-00/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
21—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
5.3 mm—staged
Frequency
osc.frequency_vph
18000 vph—staged
Power reserve (typical)
power.reserve_typical_h
42 h—staged
Discontinued
prod.discontinued_year
1970—staged
Introduced
prod.intro_year
1963—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 · 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/20181107174351/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Junghans_651_00
    archivetier 2retrieved 2018-11-0712 facts on this page
  2. 2
    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 2022-08-162 facts on this page
  3. 3
    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
  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/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
  6. 6
    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
  7. 7
    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
  8. 8
    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
  9. 9
    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
  10. 10
    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
  11. 11
    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