Family line
Baume & Mercier Baumatic BM12-1975A
Manufacturer-internal (Ranfft sense)2 calibers1 lineage edges2 related edgesdesign:baume-mercier-bm12-1975acompare specs · 2
This profile traverses revision_of · variant_of and drops 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 calibersBased-on star (WatchBase sense) · 4 calibers
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
| Caliber | Relationship | To | Status | Detail | Sources |
|---|---|---|---|---|---|
| IWC 32111 | variant of lineage | Baume & Mercier Baumatic BM12-1975A | accepted | interchange 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'. | |
| design:cartier-1847-mc | functional equivalent of related | Baume & Mercier Baumatic BM12-1975A | accepted | named by Caliber Corner as a similarly designed Richemont caliber; the unordered platform identity, kept out of the ancestry graph | |
| design:iwc-32110 | functional equivalent of related | Baume & Mercier Baumatic BM12-1975A | accepted | same caliber class; 72 h versus the 32111's 120 h reserve |
Sources
- 1Caliber Cornerhttps://calibercorner.com/iwc-caliber-32111/curated dbtier 2retrieved 2026-08-243 facts on this pagecited, never crawled