BSA B50 motocross bike. 1973. 500cc. Frame No. B50MXDH01287 Engine No. B50MXDH01287 Canadian import,

BSA B50 motocross bike. 1973. 500cc.Frame No. B50MXDH01287 Engine No. B50MXDH01287Canadian import, engine turns over. Comes with Nova document.