10 rarest and most valuable coins in the world (With Pictures)

6. 1804 Silver Dollar

The sixth place in the list of most valuable coins is occupied by 1804 silver dollar. These coins were not actually minted in 1804, but in the 1830s. Featuring the bust of Liberty, this dollar coin was produced as part of diplomatic gifts for Edmund Roberts in his diplomatic missions to Siam and Muscat. These coins are divided into three ‘Classes’, and only 15 specimens are known to exist. The Class I specimens are the most valuable ones. One specimen of Class I, previously owned by the Sultan of Muscat, was sold for $4.1 million in 1999.