High Quality Content by WIKIPEDIA articles! The one hundred euro (€100) note is one of the higher value euro banknotes and has been used since the introduction of the euro (in its cash form) in 2002. The hundred euro note is the third largest at 147 x 82mm with a green colour scheme. The architectural style depicted in the hundred euro note shows the Baroque and Rococo style. It is consequently used daily by some 332 million Europeans. The hundred euro banknote is used in the 22 countries which have it as their sole currency (with 20 legally adopting it) in Europe.