CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeMarvin 744 (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) — the caliber this page is aboutMarvin 744 (ETA 236…1959maker not sourced1 exec · grade ?MST 439 (ETA 2365) — open caliber pageMST 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

Marvin 744 (ETA 2365)

maker not sourcedintroduced 1959design:marvin-744compare 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”)“1-3) ca. 1960: Marvin, 744, Swiss Made, 3 Adjs, 25 Jewels - Patented; Incabloc”
not after 1965
a dated example movement, ca. 1960 (+5 yr, the source says “circa”)“1-3) ca. 1960: Marvin, 744, Swiss Made, 3 Adjs, 25 Jewels - Patented; Incabloc”
not after 1965
a dated example movement, ca. 1960 (+5 yr, the source says “circa”)“ca. 1960: Marvin, 744, Swiss Made, 3 Adjs, 25 Jewels - Patented; Incabloc”
not after 1965
a dated example movement, ca. 1960 (+5 yr, the source says “circa”)“1-3) ca. 1960: Marvin, 744, Swiss Made, 3 Adjs, 25 Jewels - 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
Marvin 744 (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 Marvin 744 (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:marvin-744/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
25—staged
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
Discontinued
prod.discontinued_year
1967ETAstaged
Introduced
prod.intro_year
1959ETAstaged
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 · 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/20230901170825/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Marvin_744
    archivetier 2retrieved 2023-09-0113 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20181107092148/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_2366
    archivetier 2retrieved 2018-11-071 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20191117174524/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_2368
    archivetier 2retrieved 2019-11-171 fact on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20191119161138/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_2367
    archivetier 2retrieved 2019-11-191 fact on this page
  5. 5
    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
  6. 6
    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
  7. 7
    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
  8. 8
    Internet Archive
    https://web.archive.org/web/20230901184304/http://ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&MST_439
    archivetier 2retrieved 2023-09-011 fact on this page
  9. 9
    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