Collectible coins encompass a wide range of categories, including historical, commemorative, and error coins. Trial coins, such as the 1916 patterns, were produced to test new designs or minting techniques and are often sought after by collectors for their rarity and historical significance. In the United States, certain trial coins remain unknown in terms of mintage numbers and specific details, adding to their intrigue and value in the numismatic community. Collectors often focus on these unique pieces due to their connection to pivotal moments in American minting history.

Item Denomination Series Year Mint
1916-- (Unknown) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1916 Unknown