The 2021 Sacagawea Dollar is a modern United States coin, part of the series that honors the Shoshone woman who helped guide Lewis and Clark on their expedition. This coin is designated with a denomination of one dollar and is not associated with any specific mint, as it does not carry a mint mark. The coin features a diameter of 26.5 millimeters and is made of a unique blend of materials, consisting of 77% copper, 12% zinc, and 1% other metals, all over a pure copper core. This composition is crafted to ensure durability and a distinct appearance. With a production type of mint strike, the 2021 Sacagawea Dollar is produced with precision to meet the standards of currency. However, it is noteworthy that the reported mintage for this particular coin is zero, suggesting that it may not be widely available. In terms of grading, the physical attributes such as weight, edge type, and designer details are not specified, indicating that further examination might be necessary for detailed grading purposes. In summary, this one-dollar coin represents a piece of American history and culture, reflecting the significance of Sacagawea in the exploration of the American West, with a modern aesthetic consistent with contemporary U.S. coinage.