 From their discovery by numismatists , 1804 dollars have commanded high prices . Auction prices reached $ 1 @,@ 000 by 1885 , and in the mid @-@ twentieth century , the coins realized over $ 30 @,@ 000 . In 1999 , a Class I example sold for $ 4 @.@ 14 million , then the highest price paid for any coin . Their high value has caused 1804 dollars to be a frequent target of counterfeiting and other methods of deception . 
