Haydn

Hi all, I have several Victorian coins that I keep in my 1880 writing slope along with other Victorian ephemera. Amongst my small coin collection I have 4 silver 3d pieces, however, I have noticed that on one of them, an 1883 coin, when you turn it over , normally the head and the reverse crown point the same direction but when you turn the coin, the 3 is on top and the crown at the bottom. Is this unusual?