About the item: Measuring approximately 8 by 10 inches (the CGC protective envelope itself and label are of course slightly larger), this photo is signed by Dan Gilvezan, who voiced Spiderman from 1981-1983 (all three seasons) in the popular Saturday morning cartoon series Spider-Man and his Amazing Friends. The signature is certified authentic by CGC and is part of their special Signature Series. With Signature Series, certified CGC witness observes the signing, then immediately takes possession of the item so there is no question of authenticity. Please note- while this has a CGC certification number, only graded collectibles are searchable in CGC's database (and grading photos is not a service CGC offers). That said, photos, prints, original art sketches not on actual comic books, colossal cards, etc., are not (currently) verifiable through the CGC database. However, CGC can still verify authenticity by calling their customer service number and speaking to a customer service representative.