I think the nice thing about your Cinelli is that (like mine) it is from 1977, the last year of Cinelli before Colombo took the company over. By the way another interesting thing about 1977 frames it that they were gradually incorporating the braze ones. Mine only has the single bottle bosses and no brake cable guides. Yours has the top tube guides which fits with what I have seen previously. It was a transformative year!