The flag that you have named "Flag of Italy" isn't actulally the italian flag of that period. That is the spanish flag.
The italian one must be one of these that I've found on these sites (not sure which one you rather use if you mean to put it in the game):
http://www.radiomarconi.com/marconi/ban ... ndiera.jpg
http://www.scoutcalcinaia.com/immagini/ ... ereita.jpg
Thanks from Italy.