Family treeETA 1080 — Heritage family: 5 calibers, 4 sourced lineage links.Drag to explore.

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accepteddisputed

Sense of “family”Heritage · 5Everything (debug) · 5 Parts cluster (Jules Borel sense) · 1 Manufacturer-internal (Ranfft sense) · 1 Based-on star (WatchBase sense) · 5 Open the full family view →

movement

ETA 1080

ETA SA Manufacture Horlogère Suissearchive filing⟨1955 or earlier⟩ range onlydesign:eta-1080compare specs · 5

⟨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”)“1-2) ca. 1950: - ; Monorex”

not after 1960

a dated example movement, ca. 1955 (+5 yr, the source says “circa”)“3-4) ca. 1955: Felca Watch Ltd., Mod.B, Swiss Made, 17 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 1080

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 1080 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-1080/unknown

Specifications

Property	Value	Scope	Status
Jewels build.jewel_count	17	—	accepted
Jewels build.jewel_count	15	Ranfft data sheet, the 15-jewel member of its 15/17/19/21 range	accepted
Jewels build.jewel_count	17	Ranfft data sheet, the 17-jewel member of its 15/17/19/21 range	accepted
Jewels build.jewel_count	19	Ranfft data sheet, the 19-jewel member of its 15/17/19/21 range	accepted
Jewels build.jewel_count	21	Ranfft data sheet, the 21-jewel member of its 15/17/19/21 range	accepted
Seconds display disp.seconds_display	central	—	staged
Lift angle esc.lift_angle_deg	52 deg	—	accepted
Casing diameter geom.casing_diameter_mm	23.7 mm	—	staged
Movement diameter geom.diameter_mm	23.3 mm	—	staged
Movement height geom.height_mm	4.15 mm	—	accepted
Swiss movement origin.swiss_movement	yes	—	accepted
Frequency osc.frequency_vph	18000 vph	—	accepted
Shock protection osc.shock_protection	other	example movement, 1950	staged
Shock protection osc.shock_protection	incabloc	example movement, 1955	staged
Power reserve (typical) power.reserve_typical_h	40 h	—	accepted
Power reserve (typical) power.reserve_typical_h	42 h	—	accepted
Hacking seconds wind.has_hacking_seconds	yes	—	accepted
Winding mode wind.mode	manual	—	accepted

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.

Descendants · 4

What came from it — revisions, variants, clones, licensed copies.

Dugena 866 (ETA 1080)
ébauche of
Ebel 104 (ETA 1080)
ébauche of
Girard-Perregaux 45 (ETA 1080)
ébauche of
Girard-Perregaux 45B (ETA 1080)
ébauche of

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: ranfft50 members

Sources

1
Internet Archive
https://web.archive.org/web/20220814033505/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&2&2uswk&ETA_1080
archivetier 2retrieved 2022-08-1416 facts on this page
2
Caliber Corner
https://calibercorner.com/eta-caliber-1080
curated dbtier 2retrieved 2026-09-088 facts on this pagecited, never crawled
3
Internet Archive
https://web.archive.org/web/20190826065400/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_1081
archivetier 2retrieved 2019-08-261 fact on this page
4
Internet Archive
https://web.archive.org/web/20191121125757/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_1084
archivetier 2retrieved 2019-11-211 fact on this page
5
Internet Archive
https://web.archive.org/web/20191121153441/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_1082
archivetier 2retrieved 2019-11-211 fact on this page
6
Internet Archive
https://web.archive.org/web/20191122195052/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_1083
archivetier 2retrieved 2019-11-221 fact on this page
7
Internet Archive
https://web.archive.org/web/20230907064529/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_866&
archivetier 2retrieved 2023-09-071 fact on this page
8
Internet Archive
https://web.archive.org/web/20191114155055/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Ebel_104
archivetier 2retrieved 2019-11-141 fact on this page
9
Internet Archive
https://web.archive.org/web/20181107153143/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Girard-Perregaux_45
archivetier 2retrieved 2018-11-071 fact on this page
10
Internet Archive
https://web.archive.org/web/20191021145523/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Girard-Perregaux_45B
archivetier 2retrieved 2019-10-211 fact on this page