What this coin looks like (obverse, reverse, mint mark location, special features, etc.): This is the Burnished Uncirculated version of the America The Beautiful (ATB) North Dakota Theodore Roosevelt National Park 5 oz silver coin. These are special numismatic collector's versions which bear the "P" mintmark on them (unlike the bullion version). The coin also has a special frosty matte (burnished) finish and they are sold directly to the public by the US Mint.
These coins also have a lettered edge with the words inscribed: ".999 FINE SILVER 5.0 OUNCE"
Coin valuation chart: Typical coin prices, values and worth per grade or condition - in USD