I can't say I know anything about Mancini's, but it's a very nice looking bike and it looks like a reasonably high end bike with a quality Columbus frame. I have a Fabio Barecci and I have never found out who Fabio is or was, but it's also pretty cool. Sometimes we're destined to ride mystery bikes.
A question though - is a bike maker "allowed" to sport world championship decals if they never won the WC? Because I see your Mancini does have them on the DT and I'm guessing they never won one...
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It never gets easier, you just go faster. ~ Greg LeMond