CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeAlpina 647 (FHF 70) — Heritage family: 5 calibers, 4 sourced lineage links.Drag to explore.
100%drag to pan · hover a caliber to isolate its line · scroll the page normallyopen the full family view →
ébauche ofébauche ofébauche ofébauche ofAlpina 647 (FHF 70) — the caliber this page is aboutAlpina 647 (FHF 70)—maker not sourc…1 exec · grade ?Dugena 677 (FHF 70) — open caliber pageDugena 677 (FHF 70)—maker not sourc…1 exec · grade ?Dugena 777 (FHF 70) — open caliber pageDugena 777 (FHF 70)—maker not sourc…1 exec · grade ?FHF 70 — open caliber pageFHF 70—Fabrique d'Horlogerie de Fon…1 exec · grade ?Waltham 1155 (FHF 70) — open caliber pageWaltham 1155 (FHF 70)—maker not sourc…1 exec · grade ?
accepteddisputed
Sense of “family”Heritage · 5Everything (debug) · 5Parts cluster (Jules Borel sense) · 1Manufacturer-internal (Ranfft sense) · 1Based-on star (WatchBase sense) · 5Open the full family view →

movement

Alpina 647 (FHF 70)

maker not sourced⟨1955 or earlier⟩ range onlydesign:alpina-647compare specs · 2
⟨1955 or earlier⟩ range only — no source gives an introduction yearread from sources · staged
not after 1955
a dated example movement, ca. 1950 (+5 yr, the source says “circa”)“ca. 1950: WXO, 1155, Waltham Watch Co, Swiss, 17 Jewels - FHF 70”

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
Alpina 647 (FHF 70)
movement
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any Alpina 647 (FHF 70) 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:alpina-647/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
17—staged
Seconds display
disp.seconds_display
small—staged
Casing diameter
geom.casing_diameter_mm
23.7 mm—staged
Movement diameter
geom.diameter_mm
23.3 mm—staged
Movement height
geom.height_mm
3.8 mm—staged
Frequency
osc.frequency_vph
18000 vph—staged
Power reserve (typical)
power.reserve_typical_h
43 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.

Sources

  1. 1
    Internet Archive
    https://web.archive.org/web/20230904024446/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Alpina_647&
    archivetier 2retrieved 2023-09-0410 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20230907051739/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_677&
    archivetier 2retrieved 2023-09-071 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20230907062400/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_777&
    archivetier 2retrieved 2023-09-071 fact on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20181108102157/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Waltham_1155
    archivetier 2retrieved 2018-11-081 fact on this page