hello, im new to the bianchi world so all help is appreciated. i just picked up a bianchi from my friend, im trying to identify it and see what size it is. The serial number is BS449516, if someone can tell me the year and other info that would be great. If the size cant be determined how should i measure it? is it 44 cm and 1995? im around 5'9 and this bike feels perfect. i can supply pix if needed,

thanx

What does the frame say ? Any stickers on the frame ?

"If the size cant be determined how should i measure it?"
Either measure center to center, or center to top of the seat lug.

What components are on it ? The quality of the components often tell you the quality of the frame.