Quoted from Mopar:Does it have 'Flipper Buttons' written on the card apron, or just the word Flipper.
If Flipper Buttons, then I'd have to think Mr. Pinball and the IPDB are mistaken and
Rock Star was not produced only for Italy, but for the U.S. AAB states also..
I restored a reimported rock star a couple years ago. As you can see at the bottom of the photo, the apron simply says "buttons".. This was definitely a reimport as the Italian operator had done some modifications in the backbox (counting to 1 million in normal play) including some labels that were written in Italian. You can see, it does say "wow" on the play field and there were "wows" in the silk screening of the backglass. I think that this was probably a transition time When they were not as strict about these things.( Late in the EM era.)