Production chronology1911–1913
Sourced production or model lifecycle range used by the main catalog timeline.
curated ↗3 years
← Calthorpe
Calthorpe / Model record
Calthorpe20 hp
Production1911–1913
Recorded originUnited Kingdom
ClassPassenger car chassis
Large prewar touring chassis sharing the 114-inch class with the 15 hp but retaining its own engine and rating.
Chronology ledger
Dates with their meaning intact
Record depth — Documented
How this is measured → This record contains useful sourced evidence, but it does not yet meet the reference-ready standard. Still needed: attributed imagery. Fields we cannot source stay empty rather than guessed.