Is there anything in particular I should look for besides serial #s? . I do have many sets that are in order of 5 or 6 at a time. Thanks for your time!
Star notes for sure and some FRB have low runs....like Minneapolis and Richmond. Rolled digits as well are something to look for.
I have some $2 bills from 1976 with postage stamps from 1976.
Fancy numbers, RADARs, Repeaters.
All of the above