Well....I hoped this would have last a little longer, but the correct answer has come quickly; Pguillem got the correct picture, and Hiawatha added that the coachbuilder was the same operator, Azienda Brusutti. So I think that it's correct to give a point each. I suppose it's a Fiat 666 (because I don't know if Brusutti would have bought a new 680 chassis in 1949), but 680 could be right as well.