This 8" x 10" photograph has been hand signed by legendary skateboarder Tony Hawk and Dan Castellaneta, voice of Homer Simpson on The Simpsons. The item has been certified authentic by PSA/DNA Professional Sports Authentication, the most trusted third-party autograph authenticator in the world. Don't miss your chance to obtain this great signed photo! PSA/DNA certification number is: AM30869. I have been obtaining autographs for years at various sporting events, practices, autograph shows, etc.And have just begun to thin out my collection. Check out my other listings for great autographed items! Feel free to contact me with any questions.