If any of the notes have an asterisk (star *), it denotes a replacement and could be worth upwards of hundreds or even thousands of dollars, and for notes of the 1986-1991 series with the birds on the back, or the later 1970's series with three prefix letters, if the serial number prefix has an "X" in it, it denotes a replacement, or even rarer, a test note and in new condition, depending on the rarity of the note, could be worth hundreds, or in a few rare cases, thousands of dollars. Now for the 1979 series with the 11 numbers on the back, replacements are denoted with the following prefixes, which are the first 4 numbers in the serial number:
$5, 3100, 3300 for rare test notes,
$20 5100, 5160.
I hope you managed to absorb all that. If you need clarification, feel free to reply.
I'll just have to collect some more Carney's
Lucky @$$. I've only been able to find one solitary Carney so far.