Here's Damian Wayne in Batman 655 - considered by collectors to be his first appearance, and the pricier of the 3 books that make up his "first appearance":   Here he is in 656, on the final page:   And here's the cover and first page of 657, where he's featured throughout the book:   So, which is his real first appearance? Is it 655 because that's the one collectors gravitate to? And don't even get me started on Killer Croc...