Hello KJ, Marvel Fantasy Masterpieces is a reprint series, so your book will have some all-time classics in it, but reprints don’t have a lot of value. As far as signed books go, to have value a seller needs a way to prove the authenticity of the signature. I’ve had some great books with some big names written on them, but always had to discount them because someone scribbled on them. Unless you’re buying a signed comic with a certificate of autctntihiey, usually a signed book’s greatest value is intrinsic to the person who got it signed.