The 2020 Sacagawea Dollar is a unique and collectible coin in the United States currency series. This particular coin has a denomination of $1, reflecting its value as a One Dollar coin. It is part of the Sacagawea Dollar series, which honors the historic Native American woman who assisted the Lewis and Clark Expedition. The coin features a striking design, although the specific designer is not attributed here. It boasts a diameter of 26.5 millimeters and is made from a composite material consisting of 77% copper, 12% zinc, and 1% other metals over a pure copper core. This composition provides durability while maintaining the coin's aesthetic appeal. This specific piece is noted to be a proof coin, which indicates that it was struck with a special process to create a mirror-like finish, giving it an elevated level of detail and brilliance compared to standard circulation coins. Additionally, it has no mint mark, suggesting it was not produced at one of the major U.S. mints where mint marks are typically stamped. Interestingly, the mintage for this coin is recorded as zero, which might imply that it was either not released for circulation or produced in extremely limited quantities, enhancing its rarity and potential value among collectors. With its unique properties and cultural significance, the 2020 Sacagawea Dollar is a compelling piece for numismatists and those interested in American history alike.