$20.00 Gold Double Eagle
 
The United States $20 gold coin, which was the largest denomination of US coin authorized in 1849, was minted from 1849 through 1933. Actually there was only one minted dated 1849 and that resides in the Smithsonian collection, and there were no 1933 coins placed into circulation, so you will have to settle for 1850-1932.
 
From 1850 through 1907, the Liberty Head design was used. Mintages of some years went into the millions, so there are still many around to choose from. Weighing in with almost a full ounce of gold, these will run you from about $900 and up for decent examples.
 
In 1907, the Double Eagle changed to the St Gaudens design. Many people consider the Saint Gaudens Double Eagle to be the most beautiful United States coin ever produced. The last of the $20 Gold Eagles were minted in 1933.

 

1885 S $20 Gold Liberty Double Eagle No Reserve

1885 S $20 Gold Liberty Double Eagle No Reserve
Price: $1,150.00 (12 Bids)
Sale Ends: 29m

1923 $20 Saint Gaudens Gold Coin NGC MS61

1923 $20 Saint Gaudens Gold Coin NGC MS61
Price: $1,325.00 (0 Bids)
Sale Ends: 32m

1904 $20 Gold Liberty Double Eagle No Reserve

1904 $20 Gold Liberty Double Eagle No Reserve
Price: $1,125.12 (7 Bids)
Sale Ends: 34m

1925 $20 Saint Gaudens Gold Coin NGC MS62

1925 $20 Saint Gaudens Gold Coin NGC MS62
Price: $1,385.00 (1 Bids)
Sale Ends: 37m

1927 Double Eagle NGC MS-64

1927 Double Eagle NGC MS-64
Price: $1,680.00 (5 Bids)
Sale Ends: 39m

5 $20 MINI DOUBLE EAGLE GOLD COIN BULLION BAR

5 $20 MINI DOUBLE EAGLE GOLD COIN BULLION BAR
Price: $3.99 (0 Bids)
Sale Ends: 39m

1883-S $20 Liberty Gold

1883-S $20 Liberty Gold
Price: $1,141.00 (5 Bids)
Sale Ends: 43m

1900 Double Eagle NGC MS-61

1900 Double Eagle NGC MS-61
Price: $1,251.00 (9 Bids)
Sale Ends: 44m

1908 U.S. TWENTY DOLLAR ST GAUDENS MINIATURE 8 GRAMS

1908 U.S. TWENTY DOLLAR ST GAUDENS MINIATURE 8 GRAMS
Price: $0.99 (1 Bids)
Sale Ends: 45m

1908 U.S. TWENTY DOLLAR ST GAUDENS MINIATURE 8 GRAMS

1908 U.S. TWENTY DOLLAR ST GAUDENS MINIATURE 8 GRAMS
Price: $0.99 (1 Bids)
Sale Ends: 45m