The coin in question is a 2008 Sacagawea Dollar, minted in Denver, part of the United States coinage series. This particular dollar coin is notable for its distinctive design, created by artists Glenna Goodacre and Thomas D. Rogers Sr. With a diameter of 26.5 mm and a weight of 8.1 grams, the Sacagawea Dollar exhibits a smooth, plain edge. The coin is composed of a unique alloy consisting of 88.5% copper, 6% zinc, 3.5% manganese, and 2% nickel, which gives it a distinct appearance and durability. In 2008, the U.S. Mint produced a total of 1,820,000 of these coins, making it a collectible item for numismatists and casual collectors alike. The absence of a mint mark implies that it was produced without denoting a specific mint location, a detail that is typical for many coins struck at the Denver mint during that period. Though the coin's face value is just one dollar, its historical and artistic significance, along with its limited mintage, may enhance its appeal in the secondary market, potentially increasing its value among collectors. Overall, the 2008 Sacagawea Dollar is an interesting blend of history, artistry, and numismatic value.