Hi Michael, welcome to the forum and the hobby. If I'm seeing what I think you're pointing out, there seems to be something that looks like an N between B and E, and something that looks like a T between E and R? If this is the same thing you're referencing, this is not an error, but coincidental markings from the coin being worn and damaged as it was circulated, i.e. post-mint damage or
PMD. If I'm looking at the wrong thing please let us know more specifically what you're seeing. Hope this helps.