Hah! Not only has it been discussed in BF but I was one of the discussors....I really need to get a better memory!
So: very likely this is some flavor of Falck (or perhaps directly from Mannesmann, bypassing the Falck middleman) tubing drawn for BMZ (who were one of the biggest contract builders in Italy, at times).
It's definitely too big for you if you're 5'7" and it's a 57CM frame, but the good news is you won't lose money re-selling it. If you weren't so far away I would suggest it to somebody here in SF who might be very interested.