CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.

Family line

Baume & Mercier Baumatic BM12-1975A

Based-on star (WatchBase sense)4 calibers3 lineage edges2 related edgesdesign:baume-mercier-bm12-1975acompare specs · 4

This profile traverses clone_of · derived_from · ebauche_of · revision_of · variant_of and keeps disputed edges. Every edge in this view carries at least one reference.

Same caliber, other senses of “family”Everything (debug) · 4 calibersHeritage · 4 calibersParts cluster (Jules Borel sense) · 1 calibersManufacturer-internal (Ranfft sense) · 2 calibers
100%drag to pan · ⌘/ctrl + scroll to zoom · hover a caliber to isolate its line
functional equivalent ofderived fromvariant ofderived fromBaume & Mercier Baumatic BM12-1975A — open caliber pageBaume & Mercier Baumatic BM1…2018Manufacture Horlogère ValFle…1 exec · grade ?Cartier 1847 MC — open caliber pageCartier 1847 MC2015maker not sourc…2 exec · grade ?IWC 32111 — open caliber pageIWC 32111—Manufacture Horlogère ValFle…1 exec · grade ?Panerai P.900 — open caliber pagePanerai P.900—maker not sourc…1 exec · grade ?
Edge types in this family
accepteddisputedcontested region

Generations run left to right, ancestors first, and the axis along the top is ordinal rather than linear: each band is one generation, labelled with the range of sourced introduction years it contains. A band reads “—” when no caliber in it has a year anyone published — the gap is the finding, not a rendering failure. Dotted arcs above and below the drawing are related edges — successor, drop-in, no-derivation — which are stored in a different table from lineage and can never form part of an ancestry path.

Every edge in this view

CaliberRelationshipToStatusDetailSources
Baume & Mercier Baumatic BM12-1975Aderived from
lineage
Cartier 1847 MCaccepted—
IWC 32111variant of
lineage
Baume & Mercier Baumatic BM12-1975Aacceptedinterchange note: described as basically a non-COSC version of the Baumatic. The delta is certification only; it is recorded here as a note rather than a component_delta — see calibers/README.md 'Deviations from spec'.
Panerai P.900derived from
lineage
Baume & Mercier Baumatic BM12-1975Aaccepted—
Cartier 1847 MCfunctional equivalent of
related
Baume & Mercier Baumatic BM12-1975Aacceptednamed by Caliber Corner as a similarly designed Richemont caliber; the unordered platform identity, kept out of the ancestry graph
design:iwc-32110functional equivalent of
related
Baume & Mercier Baumatic BM12-1975Aacceptedsame caliber class; 72 h versus the 32111's 120 h reserve

Sources

  1. 1
    SJX Watches
    https://watchesbysjx.com/2018/06/baume-mercier-can-now-be-taken-seriously-with-the-baumatic.html
    presstier 2retrieved 2026-08-241 fact on this page
  2. 2
    Caliber Corner
    https://calibercorner.com/iwc-caliber-32111/
    curated dbtier 2retrieved 2026-08-243 facts on this pagecited, never crawled
  3. 3
    WatchBase
    https://watchbase.com/panerai/caliber/p-900
    archivetier 3retrieved 2026-08-241 fact on this pagecited, never crawled
  4. 4
    yourwatchhub.com
    https://www.yourwatchhub.com/tag/panerai-caliber-p900/
    presstier 3retrieved 2026-08-241 fact on this page