Keywords: Motor-Sport-Museum am Hockenheimring, 1937 Mercury, with 596cc Scott twin-cylinder two-stroke engine, pic2.JPG Photographed at the Motor-Sport-Museum am Hockenheimring Germany own 2013-03-21 13 57 37 Alf van Beem CC-zero Motorcycles in the Hockenheimring Motor-Sport-Museum Unidentified motorcycles |