<P> The opposite situation is seen in some coins, e.g. coins of the United States . In this case, the coin must be flipped about its horizontal axis in order to see the other side the correct way up . In other words, the image on one face of the coin is upside - down relative to the other . For this reason,' coin orientation' is used in the United States to express the opposite of' medal orientation' . </P> <P> Coins with coin orientation include United States coinage, South Korean coinage, Thai coinage and pre-Euro French coinage . </P>

Why is the back of a coin upside down