Well, it's a Cinelli Supercorsa. This guy is asking $2G for his with newer tubeset but more classic and region-correct componentry:
http://cgi.ebay.com/Cinelli-Super-Co...item439db5c384
I know Cinelli switched from SL to SLX tubing for the SC in 1986, and the decal on that one looks 1990-ish to me.