This is an exciting comic book featuring the iconic characters of Killer Croc and Batman. The issue number is 523, and it was published in 1983 by Marvel Comics. The comic is part of the Bronze Age era of US comics and is a must-have for collectors.The comic book is in 8.0 Very Fine grade, and it is a key book for fans of the Detective Comics series. The storyline is action-packed and revolves around a war between Grundy and Batman. This comic book is a great addition to any collection and is a true gem for fans of comic books.