A 1953 AJS 7R, a 1927 Böhmerland Reisemodell, a 1927 BMW R47, a 1991 Honda RC30, a 1933 Jawa Rumpal, a 1904 Laurent et Klement, a 1976 MV Agusta 750S America, a 1929 Neander P3, a prototype Suzuki Katana and a Vincent Black Shadow. These are just some of over 300 bikes that will go on sale at Bonhams on June 30th when they auction off the largest single-owner motorcycle collection ever. The motorcycles are owned by Fritz Ehn, an Austrian professor who’s been collecting them since 1961. The reason he’s selling them? To make room for his collection of vintage tractors. We call dibs on the Böhmerland.