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
5 euro cent coin all euro coins from the value of 10 cent and above were redesigned in 2007 to show a new map. The 1- to 5-cent coins, however, did not change, as the highlighting of the old members over the globe was so faint it was not considered worth the cost. However, new national coin designs were added in 2007 with the entry of Slovenia, in 2008 with Cyprus and Malta and Slovakia in 2009. In 2011 Estonia, in 2014 Latvia and Lithuania in 2015. The coins are composed of copper-covered steel, with a diameter of 21.25 mm, a 1.67 mm thickness