Aiace?
Never heard of that one. 61-63, according to my source.
Ambassador was only made in 69, according to the same.
Cardellino83 from 62-65
Dingo Cross? Can't have been many of those. Plenty of other Dingo submodels: GT, MM, Sport, Tre, SS, Super, Tourismo.
Plenty of others overlap from 50s to 60s - Hipania series - and from 60s to 70s - Trotters.
Of course, you haven't said that it's a bike. So it could be something like the Mulo Mechanico or the Motocoltivatore Universal.