Euro banknotes entered circulation on 23 September 2014. The full design of the Europa series 20 euro banknote was revealed on 24 February 2015, On 4 May 2016, the European Central Bank announced that the Europa series 500 euro banknote would not be released, due to fears of "facilitating the criminal activity". The old series will gradually be withdrawn. The ECB will announce "well in advance" when the old notes will lose their legal tender status. However, they will not lose their value and it will be possible to exchange them for new notes at Eurosystem central banks indefinitely. "A good design
Russian five-ruble banknote The note has two watermarks, the one on the left is the denomination of the bill, whilst the one on the right is Saint Sophia Cathedral in Novgorod. Both can be seen when held up to the light. A security thread runs through the banknote – when held up to the light "ЦБР 5" can be seen. The vertical banner to the left of the Millennium of Russia, is printed on both sides of the note, when held up to the light the band should be complete. Blue, red, and yellow threads are randomly distributed across the banknote. When viewed