CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeDugena 991 (AS 1526) — Heritage family: 4 calibers, 3 sourced lineage links.Drag to explore.
accepteddisputed

movement

Dugena 991 (AS 1526)

maker not sourcedyear not sourceddesign:dugena-991compare specs · 2
bounding evidence — no range is drawn on the era axis
not after 1970
a dated example movement, ca. 1965 (+5 yr, the source says “circa”)“ca. 1965: AS, 1525, 1526 - DSW; 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
Dugena 991 (AS 1526)
movement
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any Dugena 991 (AS 1526) 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:dugena-991/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
17—staged
Seconds display
disp.seconds_display
small—staged
Casing diameter
geom.casing_diameter_mm
26 mm—staged
Movement diameter
geom.diameter_mm
25.6 mm—staged
Movement height
geom.height_mm
2.8 mm—staged
Frequency
osc.frequency_vph
18000 vph—staged
Shock protection
osc.shock_protection
incablocexample movement, 1965staged
Power reserve (typical)
power.reserve_typical_h
44 h—staged
Winding mode
wind.mode
manual—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 · 1

Where this construction came from. Read up the arrows.

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

Dugena family/generations block
authority: ranfft6 members

Sources

  1. 1
    Internet Archive
    https://web.archive.org/web/20230907071528/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_991&
    archivetier 2retrieved 2023-09-0712 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20181106134145/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Dugena_3003
    archivetier 2retrieved 2018-11-061 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20181106134151/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Dugena_3006
    archivetier 2retrieved 2018-11-062 facts on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20230907071309/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_990&
    archivetier 2retrieved 2023-09-071 fact on this page
  5. 5
    Internet Archive
    https://web.archive.org/web/20181106134222/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Dugena_3022
    archivetier 2retrieved 2018-11-061 fact on this page