I’m going out on a limb here with my Italian and guess that Quattro Valvole means four valve. There was a four valve Ferrari 308GTB/GTS about 1984. The full name of the watch is Quattro Valvole by Meccaniche Veloci. Again, rusty Italian translates into mechanical speed. Pretty cool, huh? It features Swiss movement in titanium in aluminum casing made like competition auto pistons.