Can we get a bit closer to it? It looks like a four stroke - the badge doesn't look like Honda so maybe a Parilla or Ducati? Ou une 360 RT 1 Yamaha, pour le peu qu'on en voie (forme et couleur du réservoir) youll have to guess it by this picture because there is not a better one
Hard to say from this picture, the US model RT1's had black gas tanks, this has had the tank painted and could be a DT1 or RT1 Need a closer shot to tell for sure.