Keywords: Motor-Sport-Museum am Hockenheimring, 1923 Schmid motorcycle pic3.JPG Photographed at the Motor-Sport-Museum am Hockenheimring Germany own 2013-03-21 13 06 59 Alf van Beem CC-zero Motorcycles in the Hockenheimring Motor-Sport-Museum Unidentified motorcycles Vintage motorcycles 1923 motorcycles |