The double eagle coin is worth twenty dollars today if you were to spend it today, but don't they could be very valuable. It was designed by Augustus St. Gaudens he designed both the obverse and reverse of the coins which were minted between 1907 and 1933. And is now considered the most beautiful coin in the world. The coin contained ninety percent gold and ten percent copper alloy. So that means that the gold inside by itself could already be worth lots of money. There are four different types of the coin the ultra-high relief, high relief, no motto, and the one with the motto. There is also a coin that is a 1907 ultra-high relief double eagle coin that has a plain edge and only one is known in existent. Now here is another fact President Franklin D. Roosevelt declared that the 1933 double eagle was illegal to own. And after some fights with the U.S government, it was sold for nearly eight million dollars! that makes it the second most valuable coin in the U.S the 1794 silver plug dollar being the most expensive. This coin is also very collectible because of its bullion value and historical value. But, sadly the designer died in 1907 just when the coin was released.