In 1926, Percy Riley introduced the 1087cc 9hp four-cylinder engine.

It was an ingenious design, with twin gear-driven camshafts and hemispherical, cross-flow combustion chambers.

The engine looked for all intents like an overhead-cam unit, however, the cams were mounted high in the block, operating pushrods and rockers for the 90-degree incline valves.

The engine became a hallmark of Riley cars.

The Riley 9 chassis was offered in many styles and equipment, including a very striking closed sports Sedan, fabric-bodied Tourers, and the sporting and sleek Brooklands Roadster.

Period literature described the Brooklands as "equally suited for competition work and daily use, very much appreciated by the motorist who desired more than average speed, hill climbing ability, acceleration, and roadworthiness." The Riley 9 proved itself a very capable competitor, with a history of many race wins, records and top results.

According to the copy continuation logbook on file, chassis 8704 was fi...