• Matching numbers (frame, engine, registration) • Known ownership history • Restored by marque specialist Simon Miles With the SS80 and SS100 well established by the mid-1920s, it was decided to add a smaller and cheaper alternative to these two 1,000cc models to the Brough Superior range.

JAP was already producing a 674cc sidevalve v-twin engine and this unit, redesigned to accommodate overhead valves, went into Brough's new 'Overhead 680'.

First shown to the public at the Olympia Motorcycle Show in 1926, the 'Miniature SS100', as George Brough called it, entered production for 1927.

The new middleweight Brough was an instant success and for the 1930 season was joined by a version to higher specification.

First seen at the 1929 Motorcycle Show, the newcomer was dubbed 'Black Alpine 680', a reference to the lavishly equipped SS100 Alpine Grand Sports and the fact that the newcomer boasted a distinctive all-black eggshell finish.

Principal mechanical difference from the standard O...