A Brief History of the Italian Marque
Built in in Genova by Fillipo Zoppoli between 1948 and 1954 ¹ the Zeta was more of a scooter than a motorcycle due to its quite small wheels. It was powered by Ducati two-strokes and later by engines from MV Agusta.
N.B. 1. Possibly 1947 to 1952
Sources: ottw.es, et al