The Mint had struck circulating commemorative coins for the United States Bicentennial, giving quarters, half dollars, and dollars struck in 1975 and 1976 a dual date, '1776–1976'. In 2002, the Mint began to consider redesigning the nickel in honor of the upcoming bicentennial of the Lewis and Clark Expedition. 'American 5-Cent Coin Design Continuity Act of 2003', was signed into law on April 23, 2003. Under its terms, the Treasury Secretary could vary the nickel's designs in honor of the 200th anniversary of the Expedition and of the Louisiana, but the nickel would again feature Jefferson and Monticello beginning in 2006. Unless Congress acts again, every future five-cent coin will feature Jefferson and Monticello.
This set includes the four Westward Journey commemorative Nickels struck at the Denver Mint from 2004 to 2005.