$1 with no serial number

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I have a bunch of ones and twos that I know are more-or-less worth face value, but one of the $1 bills stands out.  It looks like all of the other bills, from 1967 except instead of a serial number, 1867 1967 is printed in red in the two places where the serial numbers are normally located.  Does this mean it's not a real bill?  Or is something rare?  I'm assuming the former but woudl appreciate advice if anyone knows.   

PS It's quite creased - it has definitely been circulated.

The $1 with no serial number but the years is very common.  The ones with serial numbers are rarer.

I would not use the word "rare" to describe any 1967 $1 note.

Thanks for you responses.  I'm not surprised that it's nothing special... but the fact that it's not a fake means I'm $1 richer.  Woo hoo!