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

Omega 661

Omegaarchive filingintroduced 1961design:omega-661compare specs
bounding evidence — no range is drawn on the era axis
not after 1969
a dated example movement, 1969“1-2) 1969: 29997612, Omega Watch Co, Swiss, Adjusted 2 Positions, 24 Jewels; Incabloc”
not after 1969
a dated example movement, 1969“1-2) 1969: 29997612, Omega Watch Co, Swiss, Adjusted 2 Positions, 24 Jewels; Incabloc”
not after 1972
a dated example movement, 1972“3-5) 1972: 34189675, Omega Watch Co, Swiss, Adjusted 2 Positions, 24 Jewels; Incabloc”
not after 1972
a dated example movement, 1972“3-5) 1972: 34189675, Omega Watch Co, Swiss, Adjusted 2 Positions, 24 Jewels; 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
Omega 661
movementproducer: Omegaarchive filing
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any Omega 661 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:omega-661/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
24—staged
Casing diameter
geom.casing_diameter_mm
15.4 mm—staged
Movement diameter
geom.diameter_mm
15 mm—staged
Movement height
geom.height_mm
4.25 mm—staged
Frequency
osc.frequency_vph
19800 vph—staged
Shock protection
osc.shock_protection
incablocexample movement, 1969staged
Shock protection
osc.shock_protection
incablocexample movement, 1972staged
Power reserve (typical)
power.reserve_typical_h
45 h—staged
Discontinued
prod.discontinued_year
1973—staged
Introduced
prod.intro_year
1961—staged
Winding mode
wind.mode
automatic—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.

Curated family labels

Omega family/generations block
authority: ranfft4 members

Sources

  1. 1
    Internet Archive
    https://web.archive.org/web/20171031011302/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&159&2uswk&Omega_661
    archivetier 2retrieved 2017-10-3115 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20171031011304/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&159&2uswk&Omega_662
    archivetier 2retrieved 2017-10-311 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20171031011306/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&159&2uswk&Omega_663
    archivetier 2retrieved 2017-10-311 fact on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20230901193929/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Omega_660
    archivetier 2retrieved 2023-09-013 facts on this page