It's not raced in Mille Miglia in '54, '55, '56, '57 or '58, then it would have not been named Cistalia.
I have traced Cistalia 1100 in this races, GP Pergusa 29.8.54. Driven by Casales. Have check official world touring races, as well as non tour races. The latter into the mid '60s, and world tour races until '58. Guess that I've spendt enough hours on this car today.