Okay, so I am only concerned with pre-1978 i.e. pre flying C logo.

Here is what I know:
1964 - Cinelli aluminum bars introduced.
1968 - Cinelli aluminum stem Mod. 1/A (A = aluminum) introduced.
1973 - Cinelli aluminum stem Mod. 1/R (R = Record) introduced.
1975 - Cinelli Mod. 1/A stem pinch bolt nut changed to allen nut fitting.
1978 - Cinelli Cino & C. sold to Antonio Columbo (owner of Columbus tubing and 3 ttt); logo changed to "Flying C" soon after.

here is what I want to know:

1. when did the logo on the bars change from being the shield on both side to the shield on one side and the model name on the other? Or was that just the difference between certain models?