This is the Scampolo 1 from 1933, built by Kraftfahrttechnischer Versuchsbau Walter Komossa und Willy Arnolds from Recklinghausen, who would become famous for their 500 cc racecars. This threewheeler was their first project. It was first powered by a 350 cc 7 hp Ilo engine, later on by a 9 hp DKW one.