Thanks to Freedom of Information Act (FOIA) suits filed by NGC and CoinWorld, the US Mint has been forced to reveal that 79,640 American Silver Eagle Coins were struck at the Philadelphia Mint in 2015, making it the Rarest Coin in the Entire 31 Year ASE Series:

Is Your Silver Stack REALLY Silver, Or Merely A High Quality Chinese Counterfeit? 

The already popular US Mint American Eagle series of precious metals coins will be getting a new addition to its rank with the United States Mint set to strike Palladium Eagles in 2017.
Palladium will join gold, silver, and platinum in the renowned series of American Eagle coins.

USMintWhen American investors buy physical gold and silver bullion, it’s often in the form of these American Eagle 1-ounce coins.
Gold’s first new bull market since 2011 last year was overwhelmingly driven by stock investors flooding into gold ETFs.  Traditional physical bar-and-coin demand was actually quite weak, falling considerably year-over-year.  Nevertheless, it’s still important to stay abreast of classic gold and silver investment demand.  One key microcosm of that comes in the form of the US Mint’s sales of its popular American Eagle coins.