Family line
Roger W. Smith Series 2
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 |
|---|---|---|---|---|---|
| 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