I am a coin collector but my son has opted for collecting currency. I am trying to help him find Friedberg numbers for his bills.
In looking at the list of Friedberg numbers for the $1 Federal Reserve Notes 2003A series, there seems to be twice as many numbers as there are bills, not counting the * designation.
Are there two different types of bills in the series? If there is a difference, what is it?
Addendum: I just figured out about the bills printed in DC and Fort Worth but there are still more bills than Issuing Bank Letters. Any idea how the Friedberg numbers match up?
In case you can't tell, I'm way out of my league on this one!
Thanks for the help.