Hi. While this is not really a question about "vintage" it was suggested to me in the Roadie forum that I cross-post my question here because you guys know your groups like the back of your hand.

I am trying to identify this group. The rear derailleur says Mirage but the rest suggests higher end parts such as Chorus? I suspect the rear derailleur was a downgrade or a way to save some money for the original owner, who otherwise maintains that the components are "Campagnolo Super". I wrongly assumed he meant "Super Record" but after seeing these photos this is definitely not the case (this is about it as far as my knowledge of Campagnolo groups). Otherwise all I know about the bike is that it was purchased new in the late 90s, custom built.

I don't have access to catalogues of the late 90s, to more photos of the bike, or the bike itself for another week. I'd like to know what I have on my hands and what to look at when I go pick it up, etc.

Thank you for any information!