One (1) 2006 $100 Note w/Over-Ink, Over-Stamped Error on both Serial Numbers .  This is unique rare error where there is extreme over-inking / over stamping on both the top left, and bottom right serial numbers as well as the "B2" Federal Reserve District Designation, and the "The United States of America" Wording and  and "100" wording.  You can see clearly how the over stamping is very visible from the back as per the pictures