Strange serial number question

[MartinBarre]

A guy on the Seymour Duncan forum posted this, I just wondered what you guys thought. The guitar is a SL2H

Hello all,
The s/n on the fretboard is off by 1 number compaired to the s/n written on the card that came with the axe, its the last number. is this normal? I cant seem to get any info on my axe.
Thanks.
the s/n on the card is u24273, the s/n on the axe is u24270.

http://www.seymourduncan.com/forum/showthread.php?p=3198718#post3198718

[Johnnyryche]

Must have been a Friday afternoon and he was in a hurry to get out of there for the weekend. Doesn't surprise me at all.

[charvelguy]

He doesn't say if the card is correct. Personally, I'd have Jackson send documentation to verify the guitar was to be stamped with X # and keep it but ya know they don't want two guitars out there possibly floating about with identical serials.