Gouby BP1860JA, S.3954.
N over sideways N in ONE. Unusually, this coin does not display any of the usual die flaws that are seen on this type. These usually include a prominent die crack running by the 1 in date and a similar crack by the second N in PENNY. A most unusual variation of this popular error and the first we have seen.
The error very clear. Fine or better with some obverse marks.