Unfortunately this 1987 news flash from Gipiemme does not contain any references to derailleurs. However it does give some indication of the various groupset names, which could include:
The key point of interest is the first appearance of the 'Cronosprint Bagarre' name. What exactly 'Bagarre' means is lost on me - perhaps an Italian speaker, conversant with 1980s marketing patois, can shed some light on this!
Many thanks to Fernando in Argentina for alerting me to the page on the Gipiemme web site that provides these fascinating scans!