What model?.

[tjmdavidson]

I have a Bianchi Columbus, the serial numbers are odd. 3761 on bottom of the crank derailleur side, 8.E on opposite side. The bike has Campognalo derailleur, Ofmega vantage crank, is Celeste green, Ambrosio 19 rims, dual bottle cages, and a raised letter B in the uptube above the shifters in the connection of the neck and uptube. Campognalo shifters.

 

[ridelover9941]

I have a Bianchi Columbus, the serial numbers are odd. 3761 on bottom of the crank derailleur side, 8.E on opposite side. The bike has Campognalo derailleur, Ofmega vantage crank, is Celeste green, Ambrosio 19 rims, dual bottle cages, and a raised letter B in the uptube above the shifters in the connection of the neck and uptube. Campognalo shifters.

Can you upload pictures