I used to own one that looked just like this. It had six forward speeds. The racers loved this bike. They would take the headlight off and it was ready for the track. I sold it when I realized it was just too dangerous to ride around Washington D.C. And I was getting older and losing my reflexes.
I write about what happened to it in the post below this one.
Also I write about my other motorcycle(a Benelli)and a road trip I took on it back in 1970.