They are nice machines. I have 2 but they are fragile. i met Bruno when he came to the USA., He spoke no english so his son tranlated. It was a great experiance
@MichiCipoten You are correct and very observant that the license plate is Dutch. The owner from Netherlands sold the bike to a classic motorcycle dealer in Belgium. He sold it to me. I tried to get in touch with the Dutch former owner to get more history on the bike but he never answered my emails in both English and translated to Dutch.
The goto guy for information about Parilla motorcycles is an Italian guy called Bruno Baccari. He has a museum in Modigliana, province of Forli Italy and is the "president" of the Parilla registry.