I wanted to let you know your question has been seen, if there is an expert who can answer this. They will pick it up when they sign on. I will opt out of this to allow them to pick it up.
These are not quite up my alley of expertise, however, they are signed and likely gathered from Comicon type events and gatherings. Signed works and comic books such as these do have potential to garner fair money. I do know a top comic book dealer, would you like his contact information?