Production chronology1906–1907
Sourced production or model lifecycle range used by the main catalog timeline.
curated ↗2 years
First revised Type B generation. Surviving photographs and technical histories show transitional transmission details, so it is kept separate from both the original 1905 B and the direct-chain B2.
Sourced production or model lifecycle range used by the main catalog timeline.
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.