still can't help you ID it, but it has good features: the campy DOs, the early Cinelli IC shell (AKA the can-opener), the gipiemme brakebridge, etc. all point to a good frame. But is it an "H" or is it a Concorde (or both)?
Can't say..but.one thing I notice is the Hatta Swan HS, which always seem to come on Benelux bikes. Hatta must have sold their entire production to Benelux, you hardly see them on any other bikes.