Ultimate Spider-man #100 Variant CGC 9.6 Signature Series comic book, from Marvel Comics, which has been signed by Brian Michael Bendis & Mark Bagley, the writer series and cover artist for 100 issues, and signed by Joe Quesada, Marvel Editor In Chief at the time!
It has been professionally graded by CGC, the largest independent comic grading company in the world, and slabbed in a sealed tamper proof protective case.
The comic grade is guaranteed to be investment grade 9.6 (NEAR MINT+) and this is a yellow label CGC signature series, which means that an authorised CGC representative witnessed the signings and this also acts as a Certificate Of Authenticity. CGC remove the comic as soon as it is signed and ship it to their facility in Florida, to ensure that the signatures are authentic.
You can check the validity of this item and the signatures by entering the 10 digit code on the yellow label at the CGC web-site.
There are no cracks on the case.