If the shell is only 68mm wide but Italian threaded, there is always the possibilkity that was orignally English but had been stripped and rethreaded to Italian. However, the serial number format does indicate an Italian manufactured frame. Some of the frame attributes seem contradictory, but the majority and strongest traits point towards a late 1984 tretubi model. It would be interesting to know if the bottom inside of the fork's steering column has the helical ridges.