The coin in question is a 2017 Sacagawea Dollar, minted at the San Francisco Mint, as indicated by its 'S' mint mark. This particular coin is a part of the U.S. currency series featuring Sacagawea, the Native American woman who played a crucial role as a guide for Lewis and Clark during their expedition. This edition of the Sacagawea Dollar is classified as a special production type, which often signifies that it may have been produced for collectors rather than for general circulation. The coin's composition features manganese-brass, giving it a distinctive golden hue. With a diameter of 26.5 mm and a weight of 8.07 grams, this dollar coin maintains the traditional size associated with the Sacagawea series. Notably, the mintage value is listed as '0', implying that this specific coin may be extremely rare or possibly not produced in commercial quantities. As a result, its rarity could significantly impact its collectible value. Overall, this 2017 Sacagawea Dollar stands out for its historical significance, unique minting details, and potential appeal to numismatists and collectors alike.