Collectible coins are specially minted or circulated coins that are valued for their rarity, historical significance, or condition. The United States Mint produced the Sacagawea Dollar, beginning in 2000, featuring the image of Sacagawea, a Native American woman, as a symbol of cultural heritage. The coin was minted in both circulating and uncirculated versions, with specific years, such as 2009, yielding limited releases that can have higher collectible value. The "N A" designation indicates that the coin may not be assigned a grade or may not be applicable for certain collectors' evaluations.