good news! Emiliano supposition is right!
I noticed this woman on
Fellini's faces book cover
unfortunately I haven't the book, but TRS has it!
so I've asked to him to check ...and here what he found:
According to
Fellini's faces book the woman in the pic is
GIOVANNA DE VITAand I've no doubt: this is the same woman we are looking for!
tnx to TRS for the precious help