the earliest Guerciottis were made by Lino Tempesta, a close relative of Paolo's. Antonio Mondonico was brought in as a partner to oversee steel roadbike production at Guerciotti's own facility during the mid-late 70's until "differences over the direction of the company" caused him to leave. From that point on Guerciotti's steel bike production was farmed out to a series of subcontractors including Billato and Basso.
*the aluminum cyclocross bikes were rebadged AlAns