Family line
Credor 7R14
This profile traverses clone_of · derived_from · design_imitation_of · ebauche_of · incorporates_module · licensed_copy_of · module_on · revision_of · tooling_transfer_of · variant_of and keeps disputed edges. Every edge in this view carries at least one reference.
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 |
|---|---|---|---|---|---|
| Grand Seiko 9R02 | derived from lineage | Credor 7R14 | accepted | interchange note: The stated improvements are in power storage: two mainsprings in parallel in a single barrel plus the Torque Return System, taking the reserve from the 7R14’s 60 h to 84 h. Grand Seiko itself does not print this relationship anywhere read this round; the claim is Monochrome’s. · component delta: barrel,gear_train |
Sources
- 1Monochrome Watcheshttps://monochrome-watches.com/grand-seiko-masterpiece-collection-sbgz007-spring-drive-9r02-review-price/presstier 2retrieved 2026-08-241 fact on this page