1986 HNB $5 – Knight-Dodge – seems to be a very common note according to the catalogue with this signature and prefix combination.
Value for the note would be Au $5, Unc $9-$12
You mentioned that this note was an error and described the centering of the note to be off on the front. If the back is out of center the same as the front, then this might be considered as a “cut out of register” error. It is very had to determine the severity of the cutting shift as a picture is not available.
Is the note worth holding on to? If the condition of the notes is excellent and you don’t need the money, then I would say yes, hold on to it.
As for the end value, cannot be given until the note is viewed, and then it is what the buyer is willing to give you.
Hope that helps.