10 euro note about 1.5 years before it is replaced due to wear. It is the second-smallest note measuring 127x67 mm with a pink colour scheme. The ten euro banknotes depict bridges and arches/doorways in Romanesque architecture (between the 11th and 12th centuries). The ten euro note contains several complex security features such as watermarks, invisible ink, holograms and microprinting that document its authenticity. The euro was founded on 1 January 1999, when it became the currency of over 300 million people in Europe. For the first three years of its existence it was an invisible currency, only used in accountancy. Euro cash
50 euro note became the currency of over 300 million people in Europe. For the first three years of its existence it was an invisible currency, only used in accounting. Euro cash was not introduced until 1 January 2002, when it replaced the national banknotes and coins of the 12 countries in the eurozone, such as the Dutch guilder and the Portuguese escudo. Today, the €50 note is used by some 332 million Europeans and in the 22 countries which have it as their sole currency (with 20 legally adopting it). Slovenia joined the Eurozone in 2007, Cyprus and Malta in 2008, Slovakia