The Bianchi at the link provided by OFG.... http://www.velocipedesalon.com/forum...425-16671.html looks the same as the bike that was posted by rothenfield1 although the details are hard to make out because the picture is from a distance. I think they are both a little different from the frame I am looking at as detailed in my earlier post above. If these other 2 frames are EL-OS then I am beginning to think that the authority on these matters, Bianchigirll, is probably right on when she indicates it may be a Columbus SBX frame made to Bianchi's specs.

Where O Where Art Thou, Bianchigirll? Speak to us about your Bianchi catalogs.