pics would be helpful, but what I know of the brand is that it's Benelux-based, but the frames were built for them in Italy, more like the late '80s to early '90s, and the original builder was the same who made Ciocc in that timeframe. (Later than early '90s models may have been sourced from other suppliers.) The PDM pro team raced on these frames, you can google for more info and pics. I'd be surprised to see an early frame with period-correct Simplex and Mafac parts cause I don't think the PDM era Concorde enterprise even existed at the time...could be a different make altogether. There was also an early Japanese bike called Concord (with no e) that also was around earlier than the '80s but would not have had French parts.