Family line
Roger W. Smith Series 2
This profile traverses clone_of · derived_from · ebauche_of · 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.
Same caliber, other senses of “family”Everything (debug) · 2 calibersParts cluster (Jules Borel sense) · 1 calibersManufacturer-internal (Ranfft sense) · 2 calibersBased-on star (WatchBase sense) · 2 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 |
|---|---|---|---|---|---|
| Roger W. Smith Series 2 Mark 2 | revision of lineage | Roger W. Smith Series 2 | accepted | interchange note: Same movement redesigned around a smaller escape wheel; the maker treats it as the same calibre at a new mark, and says the Series Two movement then 'became the basis of Roger's soon to be expanded range'. · component delta: escapement_architecture | |
| Roger W. Smith Series 2 | different from related | design:omega-2500 | accepted | Both movements carry a Daniels co-axial escapement and they are not the same escapement: Smith's site says Omega used Daniels's slim-line version and only later moved to the original two-wheel-with-pinion form that the Series 2 was designed around. |
Sources
- 1rwsmithwatches.comhttps://rwsmithwatches.com/evolutionmanufacturertier 1retrieved 2026-08-242 facts on this page