Looking to get a HUGE Iron Man run, does a date stamp on page 1 kill value?

[craftyrighty]

My buddy has a near mint, very nice look unread of Iron Man run numbers 120-332. First page on almost all have a small date stamp, like the ones LCS's used to do. The dates seem to have nothing to do with release date though


My buddy wants $550 for the run which is ok I think, here is a pic a stamp

 

[Logan Hall]

no, date stamps do not kill value or affect the grade of the comic.