I found this photo on a spanish bikes'magazine named Motociclismo (concretely in the 50th anniversary special). This si teh text:
"Rafael Naranjo, 30 years old, illustration's painter
(...)My first bike enthusiasted me so much than, althought being a Vespino, I thought I had a big bike , and that with it I would be capable of doing more than was possible with it (...) It was a Motovespa Vespino SL 50 -shown in photo-, costed me 80000 pesetas (510 US $ ) approximatedly. "
It seems that he loved to going out to mountain roads for fast cornering...je,je,je!