Captain America #600 Dynamic Forces Signed comic book from Marvel Comics, which is signed by Joe Simon, the late great co-creator of Captain America with Jack Kirby in the 1940s!
Joe Simon sadly passed away in December 2011.
It is sealed with a Dynamic Forces Certificate Of Authenticity (COA) confirming that the signature is authentic. It was limited to just 20 copies produced. Unopened in Near Mint condition. Scans are of the actual item.