1849 Double Eagle Pattern 1oz .999 Gold Smithsonian 2011 Restrike NGC/Gem Proof Ultra Cameo. Only one of the original 1849 Double Eagle Exist today, housed at the Smithsonian. This coin was authorized to be struck in 2011 by the Curator of the Museum in limited edition. This $20 gold eagle tribute proof edition coin was struck containing one ounce of pure .999 fine gold. A great piece of American history. These restrikes are now seldom seen or offered.