The 1866 Three Dollar coin from the United States is a notable collectible due to its historical significance and rarity. Specifically, Die and Hub Trials and Splashers are experimental coins created during the minting process to test designs, dies, and production techniques. These trial pieces are often unique or produced in very limited quantities, making them highly sought after by collectors. The 1866 date signifies a transitional period for U.S. coinage, reflecting changes in design and composition. Collectors value these trials for their connection to the minting process and their representation of numismatic innovation.

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