The decal scheme is 1985-1987, while the Formula Two decal narrows that to 1986-1987. The tre-tubi designation is indicative of a 1986 Brava or a 1987 Squadra. The lack of a 1986-1987 Campione del Mondo decal would normally have me leaning towards a 1986 Brava but the USA literature does not not list it as being available in celeste. In the end, the model is of minor importance. What's significant is the lower-mid-range status and Italian origin established by the tre tubi Formula Two tubeset. If the OP obtains the frameset, the serial number should allow us determine the exact year and consequently the model.