'Coin orientation' (or 'coin alignment' or variations of these) is a feature of
coins. When viewing one side of a coin with coin orientation, correct side up, 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.
Coins with coin orientation include
United States coinage and pre-Euro
French coinage.
Compare
medallic orientation.