Proof Gold Eagles are the version of the popular American Gold Eagle coin, the United States’ official gold bullion coin. As is the standard procedure for other proof editions, the Proof Gold Eagle is put through a specialized minting procedure utilizing specialized dies to create a highly detailed specimen. The mint uses lustrous coin blanks [...]

Great article that compares the differences between Gold Eagle Proof Coins and Gold Buffalo Proofs.
Gold Buffalo Proof Vs Gold Eagle Proof – Which One Should You Buy To Profit? by Christina Goldman
If you are having sleepless nights over a decision to make on investing in Gold Buffalo Proof Vs Gold Eagle Proof coins, worry not [...]

Produced for coin collectors by the The United States Mint, these proof versions of popular American Gold Eagle coins make a quality addition to any gold bullion collection or investment portfolio. 
American Gold Proof Eagle coins are subjected to a specialized process during production. The process starts when Mint workers manually feed specially burnished gold coin [...]