This rare 1794 silver dollar could be one of the first, if not the first, to be struck by the U.S. Mint.
Next month, it's going up for sale in Las Vegas. The coin is dubbed the Flowing Hair dollar.
It features a portrait of Lady Liberty on one side and an eagle on the other.
The last time it sold back in 2013, it went for $10 million, surpassing the world record for the most ever paid for a rare coin.
The sale of the Flowing Hair dollar will take place on Oct. 8 at the Venetian.