This looks to be a high quality Concorde frame . It has plenty of Concorde brand engraving and the Italian flag on the top tube . I reckon it is an Aquila or Squadra model the top two at one time in the Concorde range . 99.9% certain this is a respray and has lost the chrome plating on forks, chain and seat stays . The circa 1978 columbus decal is a respray give-away as by the time this frame was built say late 1980 's to mid 1990 's the columbus decal had changed and would actually tell you on the decal if it was SL, SLX ,SP ,SPX etc. My eyes are not great but I think I see a "94" stamped on the bracket shell if so it was made in 1994 also I would expect to see SL or SLX stamping on the shell too. A nice find which should ride great .