Serial number, in conjunction with frame features points to August 1983, so it's right around the crossover between 1983 and 1984 models. Offhand, I don't recall Bianchi specifying Galli components, so it would appear to have been Bianchensteined to an extent, unless it is some foreign model. I was also expecting more chrome, especially on the stay caps and fork crown, so I;m not sure of the model. As noted, 59 is probably the frame size and would right around the size where many builders crossed over from SL to SP. However, it does appear to be a high grade frame based on the reinforcing tangs on the fork blades and stay bridge. Unfortunately, the condition is only fair.