I have strong suspicions this is a repaint. Concordes of this era had really wild paint jobs, with all kinds of shading/netting effects, with the model name on the top tube just behind the head tube. That said, all the details are right for a concorde of this era (brake bridge, that little flag on the top tube, chroming, fork engravings). I'd say a prelude or aquilla, but can't be too sure. The main difference between these models was the tubing, and since the original tubing sticker has been replaced with a generic columbus one, it's hard to tell from pictures alone.

My instinct would say concorde prelude made with columbus sl, since the frame details are the same on my concorde prelude, and the 27.2 seat post disqualifies it for being columbus aelle.