Euro coins edge of the €2 coin also protects it from counterfeiting. Euro coins were designed in cooperation with organisations representing blind persons, and as a result they incorporate many features allowing them to be distinguished by touch alone. In addition, their visual appearance is designed to make them easy to tell apart for persons who cannot read the inscriptions on the coins. The coins increase in size and weight with value. Of the eight denominations of euro coins, the three lowest denominations are small, resemble copper in colour and are quite thin and light. The next three denominations resemble gold in
Coin orientation and reverse share the same position. In Britain this is sometimes called "British turnover." British coinage, most other Commonwealth coinage, Japanese yen coinage, and Euro coinage have medallic orientation. If, when the obverse of a coin is right side up, a left or right turn shows the reverse image to be upside down, then the coin has 'coin orientation'. United States coinage, South Korean coinage, Thai coinage and pre-Euro French coinage have coin orientation. Coin orientation Coin orientation (or coin alignment or variations of these) is the relation of the vertical orientation of the images on the obverse and reverse