I seen this one and agree with PSA. Doesn't look right.
Not real, I'm sorry :(
Whoever forged it used that one as a reference
Eric is better able to explain the technical aspect of signatures. My experience is based on looking at hundreds of Audrey Hepburn signatures over the years. Good ones and bad ones. I really don't have any scientific reasons but when I looked at this one carefully it just didn't fit the mold so to speak. It appears too carefully and slowly signed, imo.