Collectible coins, particularly in the context of the United States, encompass a variety of types, including the three-dollar coins, which were issued in limited quantities and often feature unique designs. Die and hub trials are experimental pieces created to test the minting process, while splashers are struck from dies that have not been fully brought up to production standards, resulting in distinctive and often sought-after errors. Collectors value these items for their rarity, historical significance, and potential for appreciation in value over time.

Item Denomination Series Year Mint
"1866" $3 Merriam Fantasy, Nickel J-C1866-6 $3 (Three Dollars) Die and Hub Trials and Splashers 1866 Philadelphia