This new 2021 proof set contains the final America the Beautiful quarter of the series honoring Alabama's Tuskegee Airmen, as well as a Lincoln cent, Jefferson nickel, Roosevelt dime, Kennedy half dollar and Native American dollar. Also included is the successor to the National Park series, a quarter depicting General George Washington's famous crossing of the Delaware River in 1776 during the Revolutionary War. Each coin is double-struck for crisp raised-relief engravings and has an elegant frosted finish to contrast with the stunning mirror backgrounds.