This Red Hot Chili Peppers “What Hits?” CD booklet was hand signed by band members Flea, Chad Smith, and Josh Klinghoffer. This item has been certified authentic by JSA (James Spence Authentication). You can verify the JSA serial number on their website spenceloa.com. BB95086. Comes with a letter of authenticity. Payment must be received within three days of purchase unless otherwise specified. Thank you!