Regarding the comics industry recent reholder scandal / scam, please note that all books I sell were submitted directly by me to CGC at various comic conventions (as well as the occasional private signing event).  I do not buy already graded books and then resell them.  So every CGC item I have for sale was graded by CGC and then came directly to me and not through another dealer.  Please further note that photos, prints, and original art sketches (that are not on actual comic books but are rather just on sketch paper or the like? i.e. anything certified by CGC that does not have a grade, are not searchable on their site by the serial number.  Only graded comics and magazines - items with grades - are searchable by serial number.  However, for such items not searchable on their site, you can call CGC Customer Service and they can verify the item authentication over the phone.  

Signed by hand by George Perez, this issue of New Teen Titans #37 guest-starred Batman and the Outsiders.  It is professionally graded by CGC a 9.8 and is part of their special Signature Series.  With Signature Series books a certified witness, employed by CGC, actually observes the signing of the comic and then immediately takes possession of the book so there is no possibility of the real autograph and artwork being switched out with another. The CGC case is scratch and defect free and will be shipped with the utmost care. As of this writing, only four Signature Series copies grade at 9.8, with no copies graded higher.