CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeMST 439 (ETA 2365) — Heritage family: 7 calibers, 6 sourced lineage links.Drag to explore.
100%overlaydrag to pan · hover a caliber to isolate its line · scroll the page normallyopen the full family view →
ébauche ofébauche ofébauche ofébauche ofébauche ofébauche ofDugena 1013 (ETA 2365) — open caliber pageDugena 1013 (ETA 236…1959maker not sourced1 exec · grade ?Dugena 3306 (ETA 2365) — open caliber pageDugena 3306 (ETA 236…1959maker not sourced1 exec · grade ?ETA 2365 — open caliber pageETA 23651959ETA SA Manufacture Horlogère…1 exec · grade ?Hamilton 33 (ETA 2365) — open caliber pageHamilton 33 (ETA 236…1959maker not sourced1 exec · grade ?Marvin 744 (ETA 2365) — open caliber pageMarvin 744 (ETA 236…1959maker not sourced1 exec · grade ?MST 439 (ETA 2365) — the caliber this page is aboutMST 439 (ETA 2365)—maker not sourc…1 exec · grade ?Tissot 717 (ETA 2365) — open caliber pageTissot 717 (ETA 236…1959maker not sourced1 exec · grade ?
accepteddisputed
Sense of “family”Heritage · 7Everything (debug) · 7Parts cluster (Jules Borel sense) · 1Manufacturer-internal (Ranfft sense) · 1Based-on star (WatchBase sense) · 7Open the full family view →

movement

MST 439 (ETA 2365)

maker not sourcedyear not sourceddesign:mst-439compare specs · 2
bounding evidence — no range is drawn on the era axis
not after 1965
a dated example movement, ca. 1960 (+5 yr, the source says “circa”)“ca. 1960: Roamer, Automatic, Swiss Pat., 21 Jewels - MST 439, Patented; Incabloc”
not after 1965
a dated example movement, ca. 1960 (+5 yr, the source says “circa”)“ca. 1960: Roamer, Automatic, Swiss Pat., 21 Jewels - MST 439, Patented; 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
MST 439 (ETA 2365)
movement
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any MST 439 (ETA 2365) 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:mst-439/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
21Ranfft data sheet, the 21-jewel member of its 21/25 rangestaged
Jewels
build.jewel_count
25Ranfft data sheet, the 25-jewel member of its 21/25 rangestaged
Seconds display
disp.seconds_display
central—staged
Casing diameter
geom.casing_diameter_mm
17.5 mm—staged
Movement diameter
geom.diameter_mm
17.2 mm—staged
Movement height
geom.height_mm
5.25 mm—staged
Frequency
osc.frequency_vph
18000 vph—staged
Shock protection
osc.shock_protection
incablocexample movement, 1960staged
Power reserve (typical)
power.reserve_typical_h
38 h—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.

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/20230901184304/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&MST_439
    archivetier 2retrieved 2023-09-0112 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20230901184403/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&MST_465
    archivetier 2retrieved 2023-09-011 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20181106131935/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Dugena_1013
    archivetier 2retrieved 2018-11-061 fact on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20191122075313/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_3306
    archivetier 2retrieved 2019-11-221 fact on this page
  5. 5
    Internet Archive
    https://web.archive.org/web/20191117132256/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Hamilton_33
    archivetier 2retrieved 2019-11-171 fact on this page
  6. 6
    Internet Archive
    https://web.archive.org/web/20230901170825/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Marvin_744
    archivetier 2retrieved 2023-09-011 fact on this page
  7. 7
    Internet Archive
    https://web.archive.org/web/20181108074122/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Tissot_717
    archivetier 2retrieved 2018-11-081 fact on this page