Regarding the green bicycle, I don't think it is quite as bad as it's being represented. The Bianchi Special CrMo tubing was typically economical, seamed, Tange tubesets and far from gas pipe. Generally, they correlated to one of the seamless, Champion tubesets. In this case there's no mention of butting and it has stamped dropouts, so it's likely Tange #5 equivalent in the main tubes with hi-tensile stays and fork. The fork appears to have a Bianchi Special decal and contrasting forks were a trend in the very late 1980s, so it may be OEM.

The decals are 1988-1989 but there's no CdM decal, so I'm leaning towards 1989. Stamped dropouts with a plain gauge CrMo main triangle suggests a frameset equivalent to the USA market Alante.

Still, it's highly frankenbiked, with a wide range of components. The owner would have to be just about giving it way for me to consider it.