Amazing Fantasy #15 comic book from Marvel Comics Group
One of the most popular and most mimicked covers in the history of comics.  Next to Action #1 and possibly Fantastic Four #1, it is right up there in popularity.  While it is not the best Spidey cover, it is a classic and belongs here for that reason alone.

       

This is a scan of an old comic book. This item is not for sale. But you can find it on ebay. Click below to go to ebay and search!