Un été d'enfer
In this picture - /vehicle_659564-Citroen-Visa-II-Entreprise-1982.html - you can see the instrument panel of this bike. It is a circa 1981-2 Honda mid size twin, either a CB250, CB400 or CB450. I own a very similar 1982 CB450T which is a North American market version. It's a Dream, 250T or 400T
I've gone for the bigger option for no other reason than the Police have a better chance of catching up on a 400.