Sacagawea Dollars are a series of coins issued by the United States Mint beginning in 2000. These coins feature a depiction of Sacagawea, a Shoshone woman who played a crucial role in the Lewis and Clark Expedition. The 2022 edition continues the tradition of honoring Sacagawea's contributions to American history. The coins are primarily composed of a golden alloy, giving them a distinct appearance. They are considered collectible items due to their historical significance and relatively low mintage compared to more common currency.