Sean Penn autographed signed copy of Bob Honey hardback first edition book

I went to the book launch for this book in Los Angeles, California a signed copy of the book was part of the price of attending, while Sean Penn discussed his inspiration for the the book. It is an excellent condition and I can assure you that the signature is authentic. I would swear this on my mother’s grave, but it has not gone through any special Authenticity program so popular with online book selling. I’m just preparing for a move and trying to lighten the load.