It is signed by hand by penciler Ethan Van Sciver & inker Bill Anderson. The are the actual, hand-signed signatures of Van Sciver and Anderson. They are not pre-printed images on the prints. No third party is involved.
It is the actual, hand-signed signature of Jacobus. i.e. anything certified by CGC that does not have a grade, are not searchable on their site by the serial number.
