thanks for the welcome..
firstly spoke to the person who bought the mystery frame in 1978 and he confirms that it's a super mistral, although the forks are replcements at about that time.
and my NR there are a couple in america with very close frame numbers......but mine seems to be the only one woth "nuovo record" i nitalics on the top tube.
what a small world it is
i've heard from "chewa" (a name i remember from the c+ forum) and "skipmagnusson" from bikeforum