The despair of historians and collectors: a bike that was developed step-by-step over a (nearly) two year period: first the fins increased on the head and cylinder, then front drum brake, widened fenders, new saddle and new silencer, then again aluminum footrests, Bosch magnet dynamo which was then exchanged for a Miller, not to mention the transition from nickel to chrome plating … 30 improvements, a puzzle for the last ‘sottocanna’ of Mandello of which 4285 units were built from 1929 to 1930.
Sport 14
