Prague

A 1933 double eagle $20 gold coin on display during the two-day long exhibition at the National Museum on March 12, 2012 in Prague. The coin, one of two 1933 Saint-Gaudens gold $20 double eagles held in the National Numismatic Collection at the Smithsonian Institution since 1934, is on a tour in Europe for the first time. The coin was sold in 2002 by Sotheby's for $7.59 million to an anonymous buyer, making it the most expensive gold coin in the world.