Eye Witness! #121
| Series | The Spectacular Spider-Man |
| Number | Vol. 1 #121 |
| Publisher | Marvel Comics |
| Date | 1986-12 |
| Type | Comic Book, Trade Paperback |
| Language | English |
| Artist | Bob McLeod, Alan Kupperberg, Keith Williams, Jack Fury, Mark Texeira |
| Colorist | Nel Yomtov |
| Editor | James Owsley |
| Editor In Chief | Jim Shooter |
| Penciler | John Romita Sr., John Buscema |
| Writer | Peter David |
| Copyright Holder | Marvel Comics Group |
| Genre | Superhero |
| Published in | USA |
| UPC | 0 71486 02199 12 |
| ISSN | 0273-6632 |