Collectible coins encompass a wide range of numismatic items that are sought after by collectors for their historical significance, rarity, and aesthetic appeal. Within the United States, examples include the 20 Dollar Gold pieces, which were minted as part of the Liberty Head series and later the Saint-Gaudens design. The Braided Hair Cents were produced in 1851 as part of the large cent series, notable for their intricate design featuring a braided portrait of Liberty. Collectors often focus on factors such as condition, mint mark, and provenances when assessing the value of these coins.