The Classica I'm familiar with was a mid-1980s, upper entry level model, typically manufactured in Japan. There is not a a lot of interest and value in these, compared to the Italian manufactured, racing models. Even in very good, ready to ride condition, I don't see a Classica bringing in much more than $200 in a typical market. However, since your is older and may may have have modifications, we really should have pictures to determine the condition and value. The serial number will tell us the exact year and country of origin.