After looking at hundreds of comic book covers, it becomes quickly apparent that not every cover is 100% original. Whether done intentionally or even underhandedly, there's something about uncovering these "swipes" that adds a new element of fun to reading and collecting comics. To celebrate Ultimate Spider-Man reaching triple digits, Mark Bagley swiped an old design from the first Spidey title to reach #100.
Amazing Spider-Man #100 Amazing Spider-Man #100
September 1971
John Romita Sr
 Ultimate Spider-Man #100 variant Ultimate Spider-Man #100
November 2006
Mark Bagley
On Ebay: Spider-Man | John Romita Sr | Mark Bagley