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That looks like ITC Kirinna Extra Bold Kursiv.
There are some differences, but they may be because of the distortion (stretched and set on an arc).
I'd say the designer is right, but the face is the eponymus Benguiat: http://new.myfonts.com/fonts/linotype/itc-benguiat/
You're right, Riccardo. I pointed to the wrong Benguiat typeface and my spelling was off, too.