Common side All coins have a common
reverse side showing how much the coin is worth, with a design by Belgian designer
Luc Luycx. The design of the 1c, 2c and 5c coins shows
Europe's place in the world as a whole, The 10c coins and above show either the 15 countries that were the European Union in 2002, or, if minted after 2007, the whole European continent, along with Luc Luycx's signature, which is visible as two L letters connected together (LL). Coins from
Austria,
Italy,
Portugal,
San Marino and the
Vatican City show the new design if minted 2008 or later.
Cyprus is shown several hundred kilometers northwest of its real position in order to include it on the map. On the €1 and €2 coins, the island is shown to be directly east of mainland
Greece; on the €0.10, €0.20 and €0.50 coins, it appears directly below
Crete. The original proposal from the
European Commission was to include
Turkey on the map, but this design was rejected by the
Council.
Initial design The original designs of the 10c, 20c and 50c coins showed the outline of each of the 15 EU member states. Each state was shown as separate from the others, thus giving Europe the appearance of an
archipelago. EU member states outside the
eurozone (
Denmark,
Sweden, and the
United Kingdom) were also depicted. Non-EU states were not depicted. On the €1 and €2 coins, the landmass appeared more cohesive although borders were indicated. As in current issues, all coins featured 12 stars in their design. Researchers from the
University of Zürich warned that an external ring of metal surrounding an inner pill of a different colour, as in the euro coins, can lead to the release of high levels of nickel, causing allergic reactions with people sensitive to the metal. The researchers also warned that the coins could contain between 240 and 320 times the amount of nickel allowed under the EU nickel directive.
National sides The
obverse side varies from state to state, with each member allowed to choose its own design. Each of the eight coins can have the same design (such as
Irish coins), or can vary from coin to coin (such as
Italian coins), among other possibilities. In monarchies, the national side usually features a portrait of the country's monarch, often in a design carried over from the former currency (e.g.
Belgian coins). Republics tend to feature national monuments, symbols, or stylised designs (such as
French coins). Engravings on the edge of the €2 coin are also subject to national choice. There are at present no plans to abolish the national designs in favour of a common European one. However, the
Commission has proposed that the 1c, 2c and 5c coins have a common design to keep costs down. Due to this, in 2012, a European Regulation established that: "A minor proportion, not exceeding 5% of the cumulated total net value and volume of circulation coins issued by a Member State, taking into account only years with positive net issuance, may be put on the market above face value if justified by the special quality of the coin, a special packaging or any additional services provided". However, a number of recommendations and restrictions still apply. Euro coins must still have a common reverse side, so only the national obverse sides may be varied. Also, the standard national obverse sides
per se should not be changed until the end of 2008, unless the
head of state depicted on some coins changes before then. These restrictions do not apply retroactively; only new designs—the national obverse sides for regular issues of states newly joining the euro or of eurozone states which change their design, and €2 commemorative coins issued from 2006 onwards—are subject to them. However, the five countries whose designs violated the first update to the rules (
Austria,
Belgium,
Finland,
Germany and
Greece) initially were assumed to have to change their design in the future, which Finland did for 2007 and Belgium for 2008. In 2008, another recommendation changed the rules again: • The twelve stars of the
European Union surrounding the coin designs need to surround the national design, including year marks and the name of the country. The stars have to appear in the same way as they are aligned on the flag of the European Union. • The design of euro coins may not be changed except for two specific circumstances: • If a coin design is in violation of the recommendations, it may be updated to bring it into line with them. • If a coin design depicts a head of state, it may be updated: ::# every fifteen years to bring it into line with the head of state's current appearance; ::# if the head of state abdicates or dies. However, temporary heads of state may not be used as a reason for changing the design; instead a €2 commemorative coin (potentially a second €2 commemorative coin) will be allowed to be issued. Finland and Belgium had already corrected their design on the coins issued to include the initials of the country in 2007 and 2008, respectively. Belgium was forced to change its design back to show the original portrait of its monarch, because the 2008 update to follow the recommendations also updated the portrait, which was against the rules. The Belgian coins from 2009 onwards show the original royal portrait of 1999, but otherwise keep the new 2008 coin design as far as the country identification and year mark are concerned. These provisions additionally prohibit further
sede vacante sets of coins by the Vatican City, allowing only commemorative coins for such occasions. Finland and Spain updated their designs to meet the new rules about the stars in 2008 and 2010, respectively. In 2012, a European Regulation approved new specifications of euro coins and named (in article 1 g) a deadline for national sides of regular coins to be updated to fully comply with the current regulation: 20 June 2062. • The national side of circulation coins shall not repeat any indication of the denomination, or any parts thereof, of the coin. It shall not repeat the name of the single currency or of its subdivision, unless such indication stems from the use of a different alphabet. However, the edge lettering of the 2-euro coin may include an indication of the denomination, provided that only the figure "2" or the term "euro" in the relevant alphabet, or both, are used. • The national side of all denominations of circulation coins shall bear an indication of the issuing Member State by means of the Member State's name or an abbreviation of it. • The national side of circulation coins shall bear a circle of 12 stars that shall fully surround the national design, including the year mark and the indication of the issuing Member State's name. This shall not prevent some design elements from extending into the circle of stars, provided that the stars are all clearly and fully visible. The 12 stars shall be depicted as on the Union flag. • Changes to the designs used for the national sides of regular coins may only be made once every 15 years, without prejudice to changes necessary to prevent counterfeiting of the currency. Without prejudice of the previous, changes to the designs used for the national sides of regular coins may be made where the Head of State referred to on a coin changes. However, a temporary vacancy or the provisional occupation of the function of Head of State shall not give any additional right to such change. • Issuing Member States shall update their national sides of regular coins in order to fully comply with this Regulation by 20 June 2062. In 2014, a new Regulation regarding euro coins was approved. In it, no changes related to what was mentioned above were established. Initially, Luxembourg, Monaco, the Netherlands and the Vatican City did not comply the specifications in their coins. Following changes in their heads of state and the subsequent changes in the design of their coins (in 2026, 2006, 2014 and 2006, respectively), they began to comply with the specifications. In 2022, France came to comply with the stars' rule after the design change it made on the 1 and 2 euro coins, in which the year had until then been inserted between the stars of the Union. As of 2026, Austria, Germany and Greece still have to include an indication of the issuing Member State. Additionally, Greece, Italy and Slovenia have to comply with the rule of the stars. Finally, Austria must eliminate the denominations on the national side of their euro coins. Bear in mind that the foregoing refers to "regular" coins since, in the case of the
2 euro commemorative coins, the aforementioned is fulfilled in all coins since 2013. This is due to the fact that each one of these coins supposes a variation in the design, while, as mentioned, "regular" coins were not affected unless the design of the national sides was changed, and have until June 20, 2062 in the event that the design had not been changed before. Finally, the different States must inform each other of their new draft designs (both of "regular" and 2 euro commemorative coins), as well as the European Council and the European Commission, which must give its approval. In one example, the initial design of Andorran 10, 20 and 50 cent coins did not obtain EU approval because the image of the
Pantokrator of San Martí de la Cortinada, included in those coins, violated the principle of religious neutrality. The image of the religious figure was eliminated in the final Andorran coin design. Another example, the 2 euro commemorative coins that Belgium planned to issue in 2015 on the 200th anniversary of the
Battle of Waterloo, caused complaints by France and withdrawal of the design. However, Belgium did issue a 2.50 euro collector's coin, taking advantage of the fact that these coins are not submitted to the draft design approval.
Security features Euro coins have high-security machine-readable features. Sophisticated bi-metal and sandwich technologies have been put into the €1 and €2 coins. The 10c, 20c and 50c coins are made of
Nordic gold, which is a unique alloy, difficult to melt and used exclusively for coins. The lettering on the edge of the €2 coin also protects it from counterfeiting.
Features for persons with impaired sight Euro coins were designed in cooperation with organisations representing
blind people, and as a result 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 colour and are thicker as well as heavier. The highest two denominations are bimetallic, being generally larger and thicker than the lower denominations. In general, the greater the value, the heavier and larger the coin. Copper colour identifies low value; gold colour identifies medium value; two different metals identify high value. There are also differences within each group. The 2 cent coin has a grooved edge to distinguish it from the 1 and 5 cent coins and also from the
US penny, which has the same colour and diameter. Similarly, the 20 cent coin edge is smooth with seven indents to distinguish it from the 10 and 50 cent coins. While currencies predating the euro were specifically designed in similar ways (different sizes, colours, and ridges) to aid the visually impaired, the euro was the first to have authorities consult organisations representing the blind and visually impaired before the release of the currency. == Commemorative issues ==