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 G10.21A

ETA SA Manufacture Horlogère Suissearchive filingyear not sourceddesign:eta-g10-21acompare specs
bounding evidence — no range is drawn on the era axis
not after 2003
a dated example movement, 2003“2003: ETA, Swiss parts, Thailand, 4 jewels”
not after 2003
a dated example movement, 2003“2003: ETA, Swiss parts, Thailand, 4 jewels (ETA G10.21A)”
not after 2003
a dated example movement, 2003“2003: ETA, Swiss parts, Thailand, 4 jewels (ETA G10.21A)”
not after 2003
a dated example movement, 2003“2003: ETA, Swiss parts, Thailand, 4 jewels (ETA G10.21A)”

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 G10.21A
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 G10.21A 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-g10-21a/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
4—staged
Movement diameter
geom.diameter_mm
30 mm—staged
Movement height
geom.height_mm
5.12 mm—staged
Quartz oscillator frequency
qz.oscillator_frequency_hz
32768 Hz—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 · 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/20040706080430/http://www.ranfft.de:80/cgi-bin/bidfun-db.cgi?00&ranfft&0&uswk&ETA_G10.21A
    archivetier 2retrieved 2004-07-066 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20040706075353/http://www.ranfft.de:80/cgi-bin/bidfun-db.cgi?00&ranfft&0&uswk&ETA_G10.711
    archivetier 2retrieved 2004-07-061 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20040706074752/http://www.ranfft.de:80/cgi-bin/bidfun-db.cgi?00&ranfft&0&uswk&ETA_G10.211
    archivetier 2retrieved 2004-07-061 fact on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20040706080450/http://www.ranfft.de:80/cgi-bin/bidfun-db.cgi?00&ranfft&0&uswk&ETA_G10.71A
    archivetier 2retrieved 2004-07-061 fact on this page