It is just positioned a bit higher. So, it is common. Definitely not rare. Both, but the higher one is more desired.
I think what the new member is trying to convey is that the serial number is slight placed higher when printed than normal. I have the picture shown the proper way to be viewed..
I understand a gas pump serial number is when one number is off centered within the number. If you are old enough and remember the gas pump analog displays you will understand. I posted this bill on another site and was told it's called a gas pump bill (I don't agree with that assesment).
Thanks. That is helpful. It looks to me like all of the green ink is high and to the left. It’s certainly not off enough to get me or 99.9% of paper money collectors excited. This gets my attention: When it’s printed upside down, especially on a $100 note. or this: Misaligned Printing
Since this note was printed on a 50-subject sheet, the serials were printed on the new-ish LEPE overprinting lines. Those lines apply the overprint in three separate passes: the left serial on all notes, the right serial on all notes, and the seals & district numbers on all notes. Thus it's now possible for just one component of the green overprint (like the right serial number on this note) to be shifted while other green components (like the Treasury seal on this note) remain well-centered. This kind of thing would have been impossible just a few years ago. The shift seen on this note is pretty minor, though; the serial number doesn't hit the border above it or the "Washington DC" below it. So I'd say it's not really an error worth a premium. It's just interesting and odd-looking because we're not used to seeing minor shifts of one serial number only.
