CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeAlpina 719 (ETA 2550) — Heritage family: 13 calibers, 12 sourced lineage links.Drag to explore.
100%drag 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 ofAlpina 719 (ETA 2550) — the caliber this page is aboutAlpina 719 (ETA 255…1965maker not sourced1 exec · grade ?Dugena 1018 (ETA 2550) — open caliber pageDugena 1018 (ETA 255…1965maker not sourced1 exec · grade ?Dugena 1080 (ETA 2550) — open caliber pageDugena 1080 (ETA 255…1965maker not sourced1 exec · grade ?Dugena 3308 (ETA 2550) — open caliber pageDugena 3308 (ETA 255…1965maker not sourced1 exec · grade ?Enicar 764 (ETA 2550) — open caliber pageEnicar 764 (ETA 2550)—maker not sourc…1 exec · grade ?ETA 2550 — open caliber pageETA 25501965ETA SA Manufacture Horlogère…1 exec · grade ?Girard-Perregaux 81.0 (ETA 2550) — open caliber pageGirard-Perregaux 81.0 (ETA 2…1965maker not sourced1 exec · grade ?Hamilton 78 (ETA 2550) — open caliber pageHamilton 78 (ETA 2550)—maker not sourc…1 exec · grade ?MST 472 (ETA 2550) — open caliber pageMST 472 (ETA 2550)—maker not sourc…1 exec · grade ?Tissot 743 (ETA 2550) — open caliber pageTissot 743 (ETA 255…1967maker not sourced1 exec · grade ?Tissot 745 (ETA 2550) — open caliber pageTissot 745 (ETA 255…1967maker not sourced1 exec · grade ?Tissot 763 (ETA 2550) — open caliber pageTissot 763 (ETA 255…1968maker not sourced1 exec · grade ?Tissot 765 (ETA 2550) — open caliber pageTissot 765 (ETA 255…1968maker not sourced1 exec · grade ?
accepteddisputed
Sense of “family”Heritage · 13Everything (debug) · 13Parts cluster (Jules Borel sense) · 1Manufacturer-internal (Ranfft sense) · 1Based-on star (WatchBase sense) · 13Open the full family view →

movement

Alpina 719 (ETA 2550)

maker not sourcedintroduced 1965design:alpina-719compare specs · 2
bounding evidence — no range is drawn on the era axis
not after 1975
a dated example movement, ca. 1970 (+5 yr, the source says “circa”)“ca. 1970: Alpina 719, Swiss Made, 21 Jewels - Patented; Incabloc”
not after 1975
a dated example movement, ca. 1970 (+5 yr, the source says “circa”)“ca. 1970: Alpina 719, Swiss Made, 21 Jewels - Patented; Incabloc”
not after 1975
a dated example movement, ca. 1970 (+5 yr, the source says “circa”)“ca. 1970: Alpina 719, Swiss Made, 21 Jewels - Patented; Incabloc”
not after 1975
a dated example movement, ca. 1970 (+5 yr, the source says “circa”)“ca. 1970: Alpina 719, Swiss Made, 21 Jewels - Patented; 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
Alpina 719 (ETA 2550)
movement
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any Alpina 719 (ETA 2550) 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:alpina-719/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
21—staged
Seconds display
disp.seconds_display
central—staged
Casing diameter
geom.casing_diameter_mm
17.5 mm—staged
Movement diameter
geom.diameter_mm
17.2 mm—staged
Movement height
geom.height_mm
4.6 mm—staged
Frequency
osc.frequency_vph
21600 vph—staged
Shock protection
osc.shock_protection
incablocexample movement, 1970staged
Power reserve (typical)
power.reserve_typical_h
42 h—staged
Discontinued
prod.discontinued_year
1972—staged
Introduced
prod.intro_year
1965—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/20230904031742/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Alpina_719&
    archivetier 2retrieved 2023-09-0413 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20190820100933/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_1081
    archivetier 2retrieved 2019-08-201 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20181106134349/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Dugena_3309
    archivetier 2retrieved 2018-11-061 fact on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20181106132012/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Dugena_1019
    archivetier 2retrieved 2018-11-061 fact on this page
  5. 5
    Internet Archive
    https://web.archive.org/web/20230906225431/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_1018&
    archivetier 2retrieved 2023-09-061 fact on this page
  6. 6
    Internet Archive
    https://web.archive.org/web/20191021230016/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Dugena_1080
    archivetier 2retrieved 2019-10-211 fact on this page
  7. 7
    Internet Archive
    https://web.archive.org/web/20190820101045/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_3308
    archivetier 2retrieved 2019-08-201 fact on this page
  8. 8
    Internet Archive
    https://web.archive.org/web/20181106152625/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Enicar_764
    archivetier 2retrieved 2018-11-061 fact on this page
  9. 9
    Internet Archive
    https://web.archive.org/web/20191116231938/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Girard-Perregaux_81_0
    archivetier 2retrieved 2019-11-161 fact on this page
  10. 10
    Internet Archive
    https://web.archive.org/web/20181107163332/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Hamilton_78
    archivetier 2retrieved 2018-11-071 fact on this page
  11. 11
    Internet Archive
    https://web.archive.org/web/20171031005155/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&154&2uswk&MST_472
    archivetier 2retrieved 2017-10-311 fact on this page
  12. 12
    Internet Archive
    https://web.archive.org/web/20181108074219/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Tissot_743
    archivetier 2retrieved 2018-11-081 fact on this page
  13. 13
    Internet Archive
    https://web.archive.org/web/20181108074242/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Tissot_745
    archivetier 2retrieved 2018-11-081 fact on this page
  14. 14
    Internet Archive
    https://web.archive.org/web/20181108074312/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Tissot_763
    archivetier 2retrieved 2018-11-081 fact on this page
  15. 15
    Internet Archive
    https://web.archive.org/web/20230902001515/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Tissot_765
    archivetier 2retrieved 2023-09-021 fact on this page