Marbold  Suggérée par jerseygirl 
Marvin Visions  Suggérée par toto@k22 

The font is Marvin, a dry transfer (rub-on) font and was included in both Letraset and Mecanorma catalogs. There are many digitizations from several commercial foundries under different names. As for freely available, Marvin Visions is the best one. It is a commercial font but there is a free variable font version