Collectible coins, also known as numismatic coins, hold value beyond their face value due to rarity, demand, and historical significance. Notable examples include the United States 1 One Dollar coins, which encompass various designs and issues throughout history. The Buffalo Nickel, minted from 1913 to 1938, is particularly sought after by collectors for its iconic depiction of Native American culture and the American bison. Coins produced in Philadelphia, such as the rare 1913 Buffalo Nickel, are often valued exceptionally high in the numismatic market.