I figured there can't be too many of these out there given that I couldn't find a single one on all the internets... It appears to be a fairly high quality steel bike with Columbus tubing and Campy dropouts. I'm flirting with the idea of going to take a look. Decent price for all that's on it. Can't tell if the Columbus fork is original and branded such to promote quality, or if it was a replacement.

(eta, seller just messaged me back that apparently the frame is 531 with slanted logo, so it must be a replacement fork)

Anyway, take a look!