There are quite a few variations associated with the Campos variation. Campos occured near the end of the production run. It appears as if Topps was in a hurry, damaged the masking. It is one of the more noticeable variations that happens to coincide with the red star black star variation. Both are difficult are considered scarce and gnerally most set collector's don't consider the set complete without these variations. Here is a link to the variations thread.
https://www.net54baseball.com/showthread.php?t=333532