I kind of stumbled onto something this morning. Not sure if this is an error on the Bep side but here goes!
I was just organizing all my $1 star notes (around $700) by number order and I saw that two of the stars on the upper right side are printed a little higher up compared to the other 700 $1 notes I have.
I also noticed that both were 2013 series in the "G" Chicago district. I also noticed that both notes has the same Face plate number and Plate position number.
Do you think this is an actual error or is common? If it's an error do you think it's rare? Below are the pictures of the front and back of the notes.