CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeETA 1260 — Heritage family: 2 calibers, 1 sourced lineage link.Drag to explore.
100%drag to pan · hover a caliber to isolate its line · scroll the page normallyopen the full family view →
ébauche ofAlpina 682 (ETA 1260) — open caliber pageAlpina 682 (ETA 1260)—maker not sourc…1 exec · grade ?ETA 1260 — the caliber this page is aboutETA 1260—ETA SA Manufacture Horlogère…1 exec · grade ?
accepteddisputed
Sense of “family”Heritage · 2Everything (debug) · 2Parts cluster (Jules Borel sense) · 1Manufacturer-internal (Ranfft sense) · 1Based-on star (WatchBase sense) · 2Open the full family view →

movement

ETA 1260

ETA SA Manufacture Horlogère Suissearchive filingyear not sourceddesign:eta-1260compare specs · 2
bounding evidence — no range is drawn on the era axis
not after 1960
a dated example movement, ca. 1955 (+5 yr, the source says “circa”)“ca. 1955: Pontiac - CS; 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 1260
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 1260 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-1260/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
17—accepted
Seconds display
disp.seconds_display
small—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
3.95 mm—accepted
Swiss movement
origin.swiss_movement
yes—accepted
Frequency
osc.frequency_vph
18000 vph—accepted
Hairspring geometry
osc.hairspring_geometry
flat—accepted
Shock protection
osc.shock_protection
incablocexample movement, 1955staged
Power reserve (typical)
power.reserve_typical_h
53 h—accepted
Winding mode
wind.mode
manual—accepted

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 · 1

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

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/20220129125256/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_1260
    archivetier 2retrieved 2022-01-2911 facts on this page
  2. 2
    Caliber Corner
    https://calibercorner.com/eta-caliber-1260
    curated dbtier 2retrieved 2026-09-088 facts on this pagecited, never crawled
  3. 3
    Internet Archive
    https://web.archive.org/web/20230904031229/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Alpina_682&
    archivetier 2retrieved 2023-09-041 fact on this page