Family line
Hangzhou 9000 series
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 |
|---|---|---|---|---|---|
| Hangzhou 9000 series | clone of lineage | Unitas / ETA 6497 | accepted | true clone | |
| Sea-Gull ST36 | clone of lineage | Unitas / ETA 6497 | accepted | true clone | |
| Unitas / ETA 6498 | variant of lineage | Unitas / ETA 6497 | unverified | interchange note: Lépine versus Savonette layout; the small-seconds position differs · component delta: bridges |
Sources
- 1chinesewatchwiki.nethttps://chinesewatchwiki.net/Clone_movementswikitier 3retrieved 2026-08-242 facts on this page
- 2Caliber Cornerhttps://calibercorner.com/eta-unitas-caliber-6497-vs-6498/curated dbtier 2retrieved 2026-08-241 fact on this pagecited, never crawled
- 3Monochrome Watcheshttps://monochrome-watches.com/history-eta-unitas-6497-and-6498-hand-wound-lepine-savonette-movements-technical-guide/presstier 2retrieved 2026-08-241 fact on this page