I saw that the other day and few months ago (I think). The rolled headbadge would seem to suggest it is a better quality frame, this was only done to a few (very few) models, but the only way to tell for sure would be to look for the X-4 mark on the brake bridge. I think the seller sent me a pic but I can't remember.
It could be a nice Bianchi again but without the original pantographed and anodized C-Record group it is just a SLX frame. In desperate need of a repaint.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk