Looks like a Colnago Super, I have the same scheme on a repainted one I purchased from Sloar. I think if the OP were to spiff it up, he could do quite well, especially if willing to ebay it and ship to Japan, due to frame size. While Dura Ace vs Campy on an ITALIAN frame can be debated until the end of the earth, I think for a trade of $800 worth of furniture, it is more than a favorable trade for you. Patience, some elbow grease, and maybe a parts change here and there, it could be worth $1200+.

It's the real deal with the Colnago name in the seat stay cap.