Cilo was a legitimately Swiss-made brand, at least for a great deal of their production (if not all of it). Very few were sold in the US until (here the rumors start) Ochsner in Chicago area became a major importer of that marque in the early '80s. But many of these were house-branded and not sure if the "Swiss-made" frames were all from Cilo or if production switched at some point to Italy contractors. Anyhow here's a link to a very early SWISS Cilo with some history of the marque (thanks to Craig Griffith):

Cilo Bicycles | Swiss Bicycles | A website about Swiss Bicycles