Collectible coins, often referred to as numismatic coins, are prized for their historical significance, rarity, and condition rather than their face value. In the United States, collectible coins include a variety of types, such as rare gold and silver coins, commemorative issues, and collectible currency. The term "Farth" could refer to a historical coin of low denomination in British currency, but within the U.S. context, collectible coins are primarily focused on those minted by the U.S. Mint, such as the American Eagle series or commemorative coins that celebrate significant events and figures in American history. Collectors often seek coins that are in uncirculated or proof condition, as these tend to have a higher value in the market.