With a mintage of only 30,000 coins, the 2019-S Enhanced Reverse Proof is the key date in Silver Eagles, the most popularly collected modern series in numismatics. Beating out even the famed 1995-W for this distinction, this coin is certain to be highly sought-after for years to come. This limited release San Francisco coin is a must-have for any collector of this popular series. Only coins submitted in sealed US Mint boxes were able to have the COA encapsulated with the coin. Very highly collectible set here Perfect