To be honest this note im not really sure what happened during the process kinda a mystery note to me i have asked questions on the pcgs board but really have not got an answer but what i do know is it is the result of a huge fold during the "copeing" process. my guess is, as the paper was being fed into the cope-pak machinery it folded over itself catching the serial numbers meant for other notes, also creating two obstruction errors elsewhere on the sheet. when the bookends come in check the BOTH for offsets of the serial numbers MISSED by the fold!.. there are a few reasons why I find this note really cool is that the serial number on the back is F 92961 and the front starts out with F 92861 thats 100,000 numbers apart never seen anything like it before