Pratt

Year working: Working 1930’s

Cutaway drawing of a Riley 12 HP in The Autocar magazine 16th September 1932 and others subsequently. See The Autocar 3rd April 1936 for body styles.

Further reference

Bluebird cutaway 1933 Image courtesy of Bonhams

Alvis 20 Rolling Chassis for The Autocar magazine 1933. Image courtesy of Bonhams