100 euro note has a green colour scheme. The hundred euro notes depict bridges and arches/doorways in the Baroque and Rococo style (between the 17th and 18th century). The hundred euro note contains several complex security features such as watermarks, invisible ink, holograms and microprinting that document its authenticity. The new banknotes of the Europa series 100 euro banknote will start circulating on 28 May 2019. 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.
World currency unit The WCU – World Currency Unit (WCU) is an indexed unit of account that stands for a unit of real global purchasing power. Since each unit by design represents a stable unit of purchasing power, the stipulated interest rate on WCU-denominated bonds represents a real interest rate. In principle, the common denomination of bonds by issuers from different parts of the world using the WCU, as well as the greater transparency of real interest rates, will produce more efficient capital markets, as savers and borrowers around the world converge in their understanding of what each basis point of interest means