1908, Military Airship M 1 constructed by Crocco-Ricaldoni, coloured picture card signed Longhi with blue "BATTAGLIONE DIRIGIBILISTI / CANTIERE AERONAUTICO DI VIGNA DI VALLE (BRACCIANO)" and "IL COMMANDANTE DEL CANTIERI", with authentic signature Mario Migoni, probably a unique item, plus a contemporary fotocard showing the airship above Castello Odescalchi
6; Flugpost; FLUGPOST INTERNATIONAL; Italien