What this coin looks like (obverse, reverse, mint mark location, special features, etc.):
Both the West Point and Philadelphia Mint produced 2015 bullion silver eagles (without mint mark). The combined mintage figure for both are 47000000. The last known mintage figure in 2017 for Philadelphia was only 79640 - making them very rare. There were no bullion silver eagles (no mint mark) minted in San Francisco in 2015.
Coin valuation chart: Typical coin prices, values and worth per grade or condition - in USD