European Commission President Romano Prodi (L) and European Monetary Affairs Commissioner Pedro Solbes Mira (R) push on a model of a euro coin to inaugurate a 2000 square meters flag depicting the symbol of the euro on a European Union building in Brussels December 31, 2001. The sign is meant to encourage people to feel proud of the single currency, which will become legal tender for more than 300 million people in 12 of the 15 EU states on January 1, 2002.