Production chronology1952–1959
Sourced production or model lifecycle range used by the main catalog timeline.
curated ↗8 years
← Berna
Berna / Model record
BernaUnderfloor-Engine Bus
Production1952–1959
Recorded originSwitzerland
ClassSingle-deck bus
Berna's first bus with a centrally mounted underfloor engine; accessible sources do not preserve a dependable type code.
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.