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.

movement

Citizen 6651A

Citizen Watch Co., Ltd.archive filingyear not sourceddesign:citizen-6651acompare specs
bounding evidence — no range is drawn on the era axis
not after 1990
a dated example movement, 1990“1990: Citizen Watch Co, Japan, 21 Jewels - U; Parashock”

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
Citizen 6651A
movementproducer: Citizen Watch Co., Ltd.archive filing
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any Citizen 6651A 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:citizen-6651a/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
21—staged
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
Frequency
osc.frequency_vph
28800 vph—staged
Shock protection
osc.shock_protection
parashockexample movement, 1990staged
Power reserve (typical)
power.reserve_typical_h
38 h—staged
Winding mode
wind.mode
automatic—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/20181106123106/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Citizen_6651A
    archivetier 2retrieved 2018-11-0611 facts on this page