An employee cleans a cabinet where conmemorative coins of World Cups are displayed during the opening of the Soccer World Championships exhibition at the Historical and Numismatic Museum of the Central Bank of Argentina, in Buenos Aires, Argentina, on June 11, 2014. At the opening ceremony, the conmemorative coin of the 2014 FIFA World Cup was presented, struck in silver "proof", special stamp used for collectibles, value of 5 Argenine pesos. (Xinhua/Martin Zabala) |