American Coin Exhibition: Two copies of all U.S. coin denominations struck from 1850 through 1855 were on display at the 1855 Paris World's Fair.

The article discusses the American Coin Exhibition at the 1855 Paris World's Fair. The exhibition featured two copies of all U.S. coin denominations struck from 1850 through 1855. The request for these coins was made by Alexander Vattemare, a French scholar and cultural philanthropist, who wanted to complete the collection of American coins in the American Library and Museum of the City of Paris. The article also mentions the potential numismatic market value of some of the coins included in the exhibition. The current whereabouts of these coins are unknown. [Extracted from the article]