The "2002 Arlington Cemetery Tomb of the Unknowns Collectors Coin" is an original challenge coin featuring a design related to the Tomb of the Unknown Soldier at Arlington National Cemetery. This militaria-themed coin likely pays tribute to the sacrifices of unidentified soldiers and serves as a collectible item for enthusiasts of military history and memorabilia. The coin is a commemorative piece that holds significance for those interested in honoring the memory of unknown soldiers who have served their country.