This 2017-S Native American Dollar coin is graded SP70 by PCGS and comes from the enhanced uncirculated set. The U.S. mint produced only 225,000 enhanced unciruclated sets and the PCGS population report shows only 7,492 coins graded as SP70.
The 2017 Enhanced Uncirculated Coin Set was released by the United States Mint in celebration of its 225th anniversary. This special set features 10 coins with an enhanced uncirculated finish, which includes a combination of laser-frosted areas and an unpolished field that accentuates design details. Unlike the mirror-like finish of proof coins, these enhanced uncirculated coins have a unique contrast.