I know this type of error 'can' happen.... but did it in this auction? I know the seal can be removed post mint too by chemicals.... $100
Looks like it is missing the 3rd overprint from the scan. My sister found a $20 like that while she worked at a bank. They are definitely uncommon, but fakes are out there. Without authentication, you can't know just by looking at the scan. I don't know if I would go for 5x face on this note though....
Ask him to send you a pic with the bill in the light so that you can see the watermarks. He has 100% positive feedback and has 4500 feedbacks so I think it may be legit.
