The coin in question is a 2002 Sacagawea Dollar, minted in Denver, with the mint mark 'D'. It is part of the United States currency, specifically classified under the dollar denomination, valued at $1. The coin is crafted from manganese-brass, a material that gives it a distinctive golden appearance. This Sacagawea Dollar weighs approximately 8.07 grams and has a diameter of 26.5 millimeters. Its unique design features Sacagawea, the Native American woman who assisted Lewis and Clark on their expedition, which symbolizes the important role of women in American history. The total mintage for this particular coin was 3,732,000 units, indicating it was produced in moderate quantity compared to other coins in circulation. Overall, this coin exemplifies both historical significance and numismatic value, making it a collectible item for coin enthusiasts and a piece of Americana for anyone interested in U.S. history and currency.