The American Eagle Gold Coin is an official gold bullion coin of the United States of America and is Authorized under the Gold Bullion Coin Act of 1985, it was first released by the United States Mint in 1986.

 

All four of the  American Gold Eagle  Coins sizes have the same design. Those minted between 1986 and 1991 are dated with Roman numerals. After 1992, the U.S. Mint switched the dating of American Gold Eagle bullion coins to Arabic.

1/10 troy oz coin
Diameter: 16.50 mm
Thickness: 1.19 mm
Weight: 0.1091 troy oz (3.393 g) 
Face value: $5  Sells For Approximately: $110

1/4 troy oz coin
Diameter: 22 mm
Thickness: 1.83 mm
Weight: 0.2727 troy oz (8.483 g)
Face value: $10 Sells For Approximately: $225

1/2 troy oz coin
Diameter: 27 mm
Thickness: 2.24 mm
Weight: 0.5454 troy oz (16.965 g)
Face value: $25 Sells For Approximately: $450

1 troy oz coin
Diameter: 32.70 mm
Thickness: 2.87 mm
Weight: 1.0909 troy oz (33.930 g)

Face value: $50 Sells For Approximately: $900

 

Face value as of January 2008. Selling Price varies depending on the daily spot price of gold