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
Euro proof sets Euro proof sets Euro proof sets are proof sets of the coins of the euro. Proof coins were originally coins minted to test the dies used in the coin minting process and to archive sets of coins minted every year. Modern proof sets are printed in higher numbers and are sold to the public and numismatists for collecting. Modern proof coins are often minted using special processes in order to make the coins more aesthetically pleasing. Mints in countries in the European Union who use the euro often make proof sets of the upcoming year's euro coins. Sets from these