This is one of the few US coins to feature a woman, which alone makes it rare in a sense. Where & How to Sell a Coin Collection for Real Money.

The dollar coin was issued near the 200th anniversary of the expedition, which occurred from 1804 to 1806.

It honors Sacagawea, the Shoshone Native American 15-year-old who helped guide Lewis and Clark on their famous expedition across what would later become the United States. The US Mint began issuing the Sacagawea dollar in 2000.