5 euro note used on the banknotes as a result of Bulgaria joining the European Union in 2007. Therefore, the new series of Euro banknotes will include "ЕВРО", which is the Bulgarian spelling for EURO as well as the abbreviation "ЕЦБ" (short for "Европейска централна банка" in Bulgarian). The European Central Bank will, in due time, announce when banknotes from the first series lose legal tender status. The five euro note is the smallest at with a grey colour scheme. All bank notes depict bridges, arches or doorways in a different historical European style; the five euro note shows the Classical era (up
Euro banknotes are issued and printed in various member states. The euro banknotes are pure cotton fibre, which improves their durability as well as giving the banknotes a distinctive feel. They measure from to and have a variety of colour schemes. The euro notes contain many complex security features such as watermarks, invisible ink, holograms and microprinting that document their authenticity. While euro coins have a national side indicating the country of issue (although not necessarily of minting), euro notes lack this. Instead, this information is shown by the first character of each note's serial number. According to European Central Bank estimates,