 | U.S. Army 250th Anniversary 24K Gold-Plated Challenge Coins. 24K Gold-Plated Challenge Coin Collection With Imagery Honoring The U.S. Army's 250 Year History - Introducing a striking collection of U.S. ArmyŽ challenge coins commemorating the 250th anniversary of the United States ArmyŽ! Challenge coins, with a rich tradition possibly dating as far back as World War I, have long symbolized camaraderie, loyalty, and achievement within military units and organizations. Today, they are among the most prized military collectibles - and there's no more fitting tribute... - U.S. Army 250th Anniversary 24K Gold-Plated Challenge Coins. |