Its a small offset printing error happens when the print of one side is on the opposite side just like your example.Im no specialist on these so im not going to give a value on it,cool note.
That’s one of the smallest offset printing errors I’ve seen. Not much value due to the overall condition of the bill but nice to find.
The previous sheet was tilted,off center, folded, etc. and left some of the ink on the backing board. When the next sheet fed in correctly it picked up some of the ink left behind.
Interesting, different, it's a keeper. Preserve it to keep it in it's present condition. Enjoyed your post, thank you.
I kept flipping back in forth from the front to the back to find out the source. I think I am right about it being the corner of the bottom left of the front of the bill. Am I right. Is their a prize?