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-2789/unknown
accepteddisputed
movement
ETA 2789
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”)“1-3) ca. 1970: UT, 25 Jewels, Swiss Made - Patented; Incabloc”
not after 1980
a dated example movement, ca. 1975 (+5 yr, the source says “circa”)“4-5) ca. 1975: F5, Dugena 3338, Swiss Made, 25 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
ETA 2789
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 2789 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.
Specifications
| Property | Value | Scope | Status | Sources |
|---|---|---|---|---|
Jewels build.jewel_count | 17 | — | accepted | |
Jewels build.jewel_count | 17 | Ranfft data sheet, the 17-jewel member of its 17/25 range | accepted | |
Jewels build.jewel_count | 25 | Ranfft data sheet, the 25-jewel member of its 17/25 range | accepted | |
Date correction disp.date_quickset | crown | — | staged | |
Date disp.has_date | yes | — | staged | |
Day disp.has_day | yes | — | staged | |
Seconds display disp.seconds_display | central | — | staged | |
Lift angle esc.lift_angle_deg | 52 deg | — | accepted | |
Casing diameter geom.casing_diameter_mm | 26 mm | — | staged | |
Movement diameter geom.diameter_mm | 25.6 mm | — | accepted | |
Movement height geom.height_mm | 5.9 mm | — | accepted | |
Swiss movement origin.swiss_movement | yes | — | accepted | |
Frequency osc.frequency_vph | 21600 vph | — | accepted | |
Shock protection osc.shock_protection | incabloc | example movement, 1970 | staged | |
Shock protection osc.shock_protection | incabloc | example movement, 1975 | staged | |
Power reserve (typical) power.reserve_typical_h | 38 h | — | accepted | |
Power reserve (typical) power.reserve_typical_h | 47 h | — | accepted | |
Discontinued prod.discontinued_year | 1976 | all automatics of the family | staged | |
Introduced prod.intro_year | 1969 | all automatics of the family | staged | |
Winding direction wind.direction | bidirectional | — | accepted | |
Hacking seconds wind.has_hacking_seconds | yes | — | accepted | |
Quickset date wind.has_quickset_date | yes | — | accepted | |
Winding mode wind.mode | automatic | — | 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 · 3
What came from it — revisions, variants, clones, licensed copies.
- Dugena 3338 (ETA 2789, ETA 2789-1)ébauche of
- Durowe 589 621 (INT, ETA 2789)ébauche of
- INT 589 621 (Durowe, ETA 2789)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.
Sources
- 1Internet Archivehttps://web.archive.org/web/20230318193017/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2789archivetier 2retrieved 2023-03-1819 facts on this page
- 2Caliber Cornerhttps://calibercorner.com/eta-caliber-2789curated dbtier 2retrieved 2026-09-0811 facts on this pagecited, never crawled
- 3Internet Archivehttps://web.archive.org/web/20190822090639/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_3338archivetier 2retrieved 2019-08-222 facts on this page
- 4Internet Archivehttps://web.archive.org/web/20191023233058/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Durowe_589_621archivetier 2retrieved 2019-10-231 fact on this page
- 5Internet Archivehttps://web.archive.org/web/20031113231925/http://www.ranfft.de:80/cgi-bin/bidfun-db.cgi?00&ranfft&0&uswk&INT_589_621archivetier 2retrieved 2003-11-131 fact on this page