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-1320/unknown
accepteddisputed
movement
Dugena 1320 (Buren 1320)
bounding evidence — no range is drawn on the era axis
not after 1965
a dated example movement, 1965“1) 1965: Buren Watch Co, 1280, Swiss Made, 30 Jewels; Incabloc”
not after 1970
a dated example movement, ca. 1965 (+5 yr, the source says “circa”)“2) ca. 1965: Dugena, 1320, Swiss Made, 30 Jewels; Incabloc”
not after 1970
a dated example movement, ca. 1965 (+5 yr, the source says “circa”)“2) ca. 1965: Dugena, 1320, Swiss Made, 30 Jewels; Incabloc”
not after 1970
a dated example movement, ca. 1965 (+5 yr, the source says “circa”)“2) ca. 1965: Dugena, 1320, Swiss Made, 30 Jewels; Incabloc”
not after 1970
a dated example movement, ca. 1965 (+5 yr, the source says “circa”)“2) ca. 1965: Dugena, 1320, Swiss Made, 30 Jewels; Incabloc”
not after 1970
a dated example movement, ca. 1965 (+5 yr, the source says “circa”)“ca. 1965: Dugena, 1320, Swiss Made, 30 Jewels; Incabloc”
not after 1970
a dated example movement, ca. 1965 (+5 yr, the source says “circa”)“ca. 1965: Dugena, 1320, Swiss Made, 30 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
Dugena 1320 (Buren 1320)
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 1320 (Buren 1320) 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.
Specifications
| Property | Value | Scope | Status | Sources |
|---|---|---|---|---|
Jewels build.jewel_count | 17 | Ranfft data sheet, the 17-jewel member of its 17/30 range | staged | |
Jewels build.jewel_count | 30 | Ranfft data sheet, the 30-jewel member of its 17/30 range | staged | |
Seconds display disp.seconds_display | central | — | staged | |
Casing diameter geom.casing_diameter_mm | 28.5 mm | — | staged | |
Movement diameter geom.diameter_mm | 28.15 mm | — | staged | |
Movement height geom.height_mm | 2.85 mm | — | staged | |
Frequency osc.frequency_vph | 19800 vph | — | staged | |
Shock protection osc.shock_protection | incabloc | example movement, 1965 | staged | |
Power reserve (typical) power.reserve_typical_h | 54 h | — | staged | |
Discontinued prod.discontinued_year | 1967 | — | staged | |
Introduced prod.intro_year | 1962 | — | 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 · 1
Where this construction came from. Read up the arrows.
- Buren 1320ébauche of
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: ranfft9 members
Sources
- 1Internet Archivehttps://web.archive.org/web/20230907001431/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_1320&archivetier 2retrieved 2023-09-0715 facts on this page
- 2Internet Archivehttps://web.archive.org/web/20230907001040/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_1280&archivetier 2retrieved 2023-09-072 facts on this page
- 3Internet Archivehttps://web.archive.org/web/20230907001152/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_1281&archivetier 2retrieved 2023-09-071 fact on this page
- 4Internet Archivehttps://web.archive.org/web/20230907001315/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_1282&archivetier 2retrieved 2023-09-071 fact on this page
- 5Internet Archivehttps://web.archive.org/web/20181106115744/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Buren_1280archivetier 2retrieved 2018-11-062 facts on this page
- 6Internet Archivehttps://web.archive.org/web/20191021145237/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&BM_12800archivetier 2retrieved 2019-10-211 fact on this page
- 7Internet Archivehttps://web.archive.org/web/20230906013954/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Bulova_12EBA&archivetier 2retrieved 2023-09-061 fact on this page
- 8Internet Archivehttps://web.archive.org/web/20191215192020/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_3205archivetier 2retrieved 2019-12-152 facts on this page
- 9Internet Archivehttps://web.archive.org/web/20230905220504/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&BM_13200&archivetier 2retrieved 2023-09-051 fact on this page
- 10Internet Archivehttps://web.archive.org/web/20230906014225/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Bulova_12EBAC&archivetier 2retrieved 2023-09-061 fact on this page