Collectible coins, specifically within the category of U.S. currency, include the Native American $1 coin series, which honors the contributions of Native Americans to the nation's history and culture. The 2020 release features a design that highlights the theme of "The Great Law of Peace," symbolizing the Iroquois Confederacy's enduring influence. These coins, produced by the U.S. Mint, are not only sought after by collectors due to their historical significance but also for their artistic designs and limited mintage. The Native American dollar coins are part of a larger series that began in 2000, with each year featuring a new reverse design and an image of Sacagawea, a notable Native American figure, on the obverse.