Other historic US coins have fetched vast sums at auction too. A rare 1794 silver dollar believed to be one of the first – if not the first – made by the US mint sold for $10 million in 2013.
That year, the United States Mint produced 2.84 million proof ... nearly 30 times what the previous owners paid for the coin 46 years ago in 1978. The sale set a new record, Russell said.