The Proof American Gold Eagles were minted, in just 1 oz increments, in 1986. By 1988, the Proof American Gold Eagle Coin became available in four sizes: 1 oz, 1/2 oz, 1/4 oz, and 1/10 oz. Unlike the brilliant uncirculated coins, that are only packaged in tubes of 10, the Proof American Gold Eagle's packaging is more aesthetically pleasing. The coin itself is encased in an appropriately fitted capsule then placed into a velvet presentation box with its Certificate of Authenticity. The presentation box is then protected by an official US Mint cardboard box.
The American Gold Eagle minting process varies slightly depending on the ideal finish of the coin. There are three finishes offered for the American Gold Eagle Bullion coins: Brilliant Uncirculated, Proof, and Burnished. The Burnished finish is only offered in 1 oz increments when production was halted in 2009, prohibiting other sizes to be minted to save money. The Proof American Gold Eagle has been minted alongside its Brilliant Uncirculated counterpart since 1986.
