US4896.)1999 YELLOWSTONE NATIONAL PARK COMMEMORATIVE SILVER DOLLAR: lovely US Mint issued silver dollar from 1999 (US Philadelphia Mint). Graded and certified by the well-known numismatic grading firm PCGS (Professional Coin Grading Service). Same size as a US silver dollar (38mm wide) and the same .900 pure silver precious metal content. Shows Old Faithful Yellowstone geyser on obverse along with 'YELLOWSTONE 1999', opposite side shows standing bison and rising sun, 'UNITED STATES OF AMERICA, ONE DOLLAR'. Graded as MS69 or 'Mint State' with 70 being the highest level of state of preservation. So, technically this one is pretty much flawless. Beautiful coin....and remember silver is at $33.00 an ounce and this coin is an ounce. Only 85,000 of these were minted by the US Mint. EXC++++