This is an 8" x 10" photo, double matted to an 11" x 14" size, autographed by the voices of Mickey Mouse (Bret Iwan) and Goofy (Bill Farmer). They both signed this on August 26, 2018, at the Palm springs Comic-Con held at the Palm Springs Air Museum.

Bret signed "Your Pals, Bret Iwan and Mickey Mouse" and Bill signed " All the Best, Bill Farmer and Goofy." They both signed in black, felt-tip pen.
 
You will receive a Certificate of Authenticity from TinkerBellTalks with a lifetime guarantee on the authenticity of the autographs or a full refund would be made.