A Brief History of the Marque
The French Dalifol machine used an engine built in Italy by Volta described as a single-cylinder engine with direct drive equipped with a central boiler and a coal-burning firebox. There appears to be a relationship with Hildebrand & Wolfmuller of Germany.
Sources: MC Storico Conti, Ozebook and others.
N.B. There was also a Volta built in Belgium in the 1930s.