[Veggie Todd]

Some unscrupulous soul could use those batch numbers on their fake card. Plus, the idea to use a date stamp instead of just writing in the date makes it look more official.

Not me, of course. But some 'other' unscrupulous soul.

[P.O.E.]

There’s got to be a librarian with a date stamp somewhere who’s willing to make a few bucks on the side. /s