The Fiat 15ter was designes by Carlo Cavalli, and entered service in 1912. It was a very sturdy an reliable vehecle, something that was proven when a convoy of 23 Fiat 15ter lorries made the first motor vehicle crossing of the Sahara, travelling three thousand kilometres without mechanical problems. It was first used in war in the Libyan war of 1912 - hence it's nickname: "Libia". It had a four cylinder petrol engine of 4398 cc (40 hp at 1800 rpm) and twin rear wheels fitted with inflated tyres. It weighed some 1.4 tons, and could attain a maximum speed of some 40km/h. In Italy it was produced between 1911 and 1920, and it was in service until 1940. anche dalle foto che ho trovato direi che come Classe U26 va bene portata 14 Quintali, velocità 40Km/h=14 per il resto come il 618 Fiat direi