The lug cutout on the seatpost looks like a cutout on my biemmezeta produced frame. The bike I have is a 1985 Performance Cycles Campione, but I do not have all those cable guides on the BB shell, and my BB shell looks very different. It could have been produced by biemmezeta, they did a lot of contract work for larger firms. In any case, it looks like a very fine example of Italian steel, so enjoy the ride and who cares who made it!