The authenticity can be verified on Professional Sports Authenticator website. This Autographed Auto Graded Gem Mint 10! & Framed 3x5 Index Card has been Personally Signed by Eric Clapton. This item is 100% Authentic, it comes slabbed and authenticated by PSA/DNA. The authenticity can be verified on Professional Sports Authenticator website. This item has been professionally framed to overall dimensions of approximately 26.5 x 29.5 inches.