Collectible coins refer to numismatic items that are sought after by collectors for their historical significance, rarity, or aesthetic appeal. In the United States, coins like the five-dollar denomination, such as the Coronet Head Cents minted in 1838 in Philadelphia, fall under this category. The Coronet Head design, created by engraver Christian Gobrecht, features a profile of Liberty wearing a coronet and represents a significant era in U.S. coinage history. Collectors often value these coins based on factors such as condition, mint mark, and historical context.