There is a pretty stout list of Ultraverse books that got the “creator autograph” treatment; some distributed by Malibu, some by Dynamic Forces and a few others including Catalyst and Atomic Comics. I’m putting a list together.
But I would put these books at the top of the list just for being cool. They are signed first issues of Strangers and Hardcase, but each certificate includes a hand-drawn sketch by artist Rick Hoberg (Strangers) and Jim Callahan (Hardcase). They are numbered to 200 but I don’t recall seeing these when they were released so I am not sure how they were distributed.
These are authentic. Says so right there. I even erased a tiny bit of one line to make sure it was an actual pencil sketch. Yep, authentic. Should have trusted the certificate.
I paid in the range of $20 each for these (they were in a lot with a few other things). The only difference between them is that the Hardcase book has a special sticker on its cheap plastic sleeve. I will probably take it out of there anyway and put it in a nice bag/board.