CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.

Family tree · none recorded

No lineage link to any other caliber is recorded for this design under the Heritage profile. That is a gap in the research, not a claim that none exists.

Open the full family view →

movement

ETA 1121

ETA SA Manufacture Horlogère Suissearchive filing⟨1955 or earlier⟩ range onlydesign:eta-1121compare specs
⟨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”)“ca. 1950: Eska Watch Co, Swiss, 17 Jewels - ETA 1120; Incabloc”
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: Eska Watch Co, Swiss, 17 Jewels - ETA 1120; Incabloc”
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: Eska Watch Co, Swiss, 17 Jewels - ETA 1120; Incabloc”
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: Eska Watch Co, Swiss, 17 Jewels - ETA 1120; Incabloc”
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: Eska Watch Co, Swiss, 17 Jewels - ETA 1120; Incabloc”
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: Eska Watch Co, Swiss, 17 Jewels - ETA 1120; Incabloc”
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: Eska Watch Co, Swiss, 17 Jewels - ETA 1120; Incabloc”
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: Eska Watch Co, Swiss, 17 Jewels - ETA 1120; Incabloc”
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: Eska Watch Co, Swiss, 17 Jewels - ETA 1120; Incabloc”
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: Eska Watch Co, Swiss, 17 Jewels - ETA 1120; 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 1121
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 1121 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-1121/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
15Ranfft data sheet, the 15-jewel member of its 15/17 rangestaged
Jewels
build.jewel_count
17Ranfft data sheet, the 17-jewel member of its 15/17 rangestaged
Seconds display
disp.seconds_display
small—staged
Casing diameter
geom.casing_diameter_mm
29.4 mm—staged
Movement diameter
geom.diameter_mm
29 mm—staged
Movement height
geom.height_mm
3.5 mm—staged
Frequency
osc.frequency_vph
18000 vph—staged
Shock protection
osc.shock_protection
incablocexample movement, 1950staged
Power reserve (typical)
power.reserve_typical_h
43 h—staged
Winding mode
wind.mode
manual—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.

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/20181106154816/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_1121
    archivetier 2retrieved 2018-11-0612 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20191016202458/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_1123
    archivetier 2retrieved 2019-10-161 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20181106154932/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_1133
    archivetier 2retrieved 2018-11-061 fact on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20210121110623/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_1125
    archivetier 2retrieved 2021-01-211 fact on this page
  5. 5
    Internet Archive
    https://web.archive.org/web/20200930021126/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_1139
    archivetier 2retrieved 2020-09-301 fact on this page
  6. 6
    Internet Archive
    https://web.archive.org/web/20181106155938/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_1293
    archivetier 2retrieved 2018-11-061 fact on this page
  7. 7
    Internet Archive
    https://web.archive.org/web/20181106155926/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_1289
    archivetier 2retrieved 2018-11-061 fact on this page
  8. 8
    Internet Archive
    https://web.archive.org/web/20210121121012/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_1127
    archivetier 2retrieved 2021-01-211 fact on this page
  9. 9
    Internet Archive
    https://web.archive.org/web/20191117183330/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_1129
    archivetier 2retrieved 2019-11-171 fact on this page
  10. 10
    Internet Archive
    https://web.archive.org/web/20181106154919/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_1131
    archivetier 2retrieved 2018-11-061 fact on this page