CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.
Family treeDoxa 87 (AS 1758) — Heritage family: 11 calibers, 10 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 ofébauche ofébauche ofébauche ofébauche ofAS 1758 — open caliber pageAS 1758—maker not sourc…1 exec · grade ?Cyma 701 (AS 1758) — open caliber pageCyma 701 (AS 1758)—maker not sourc…1 exec · grade ?Doxa 87 (AS 1758) — the caliber this page is aboutDoxa 87 (AS 1758)—maker not sourc…1 exec · grade ?Girard-Perregaux 26 (AS 1758) — open caliber pageGirard-Perregaux 26 (AS 1758)—maker not sourced1 exec · grade ?Girard-Perregaux 26.09 (AS 1758) — open caliber pageGirard-Perregaux 26.09 (AS 1758)—maker not sourced1 exec · grade ?Girard-Perregaux 26.19 (AS 1758) — open caliber pageGirard-Perregaux 26.19 (AS 1758)—maker not sourced1 exec · grade ?Girard-Perregaux 26.29 (AS 1758) — open caliber pageGirard-Perregaux 26.29 (AS 1758)—maker not sourced1 exec · grade ?Girard-Perregaux 26.3 (AS 1758) — open caliber pageGirard-Perregaux 26.3 (AS 1758)—maker not sourced1 exec · grade ?Gruen 455R (AS 1758) — open caliber pageGruen 455R (AS 1758)—maker not sourc…1 exec · grade ?Synchron 35 (AS 1758) — open caliber pageSynchron 35 (AS 1758)—maker not sourc…1 exec · grade ?Zodiac 52 (AS 1758) — open caliber pageZodiac 52 (AS 1758)—maker not sourc…1 exec · grade ?
accepteddisputed
Sense of “family”Heritage · 11Everything (debug) · 11Parts cluster (Jules Borel sense) · 1Manufacturer-internal (Ranfft sense) · 1Based-on star (WatchBase sense) · 11Open the full family view →

movement

Doxa 87 (AS 1758)

maker not sourcedyear not sourceddesign:doxa-87compare specs · 2

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
Doxa 87 (AS 1758)
movement
IIDesignations — 0 names

No designation is recorded for this design yet.

IIIExecutions — 1 article

No source in this corpus states which grade any Doxa 87 (AS 1758) 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:doxa-87/unknown

Specifications

PropertyValueScopeStatusSources
Jewels
build.jewel_count
17Ranfft data sheet, the 17-jewel member of its 17/21 rangestaged
Jewels
build.jewel_count
21Ranfft data sheet, the 21-jewel member of its 17/21 rangestaged
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
2.8 mm—staged
Frequency
osc.frequency_vph
21600 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

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/20181106131705/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Doxa_87
    archivetier 2retrieved 2018-11-0611 facts on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20191207020616/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Cyma_701
    archivetier 2retrieved 2019-12-071 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20181107152018/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Girard-Perregaux_26_09
    archivetier 2retrieved 2018-11-071 fact on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20191016201620/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Girard-Perregaux_26_19
    archivetier 2retrieved 2019-10-161 fact on this page
  5. 5
    Internet Archive
    https://web.archive.org/web/20191019071539/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Girard-Perregaux_26_29
    archivetier 2retrieved 2019-10-191 fact on this page
  6. 6
    Internet Archive
    https://web.archive.org/web/20181107152051/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Girard-Perregaux_26_3
    archivetier 2retrieved 2018-11-071 fact on this page
  7. 7
    Internet Archive
    https://web.archive.org/web/20181107152006/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Girard-Perregaux_26
    archivetier 2retrieved 2018-11-071 fact on this page
  8. 8
    Internet Archive
    https://web.archive.org/web/20181107160002/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Gruen_455R
    archivetier 2retrieved 2018-11-071 fact on this page
  9. 9
    Internet Archive
    https://web.archive.org/web/20171031024101/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&182&2uswk&Synchron_35
    archivetier 2retrieved 2017-10-311 fact on this page
  10. 10
    Internet Archive
    https://web.archive.org/web/20181108111507/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Zodiac_52
    archivetier 2retrieved 2018-11-081 fact on this page