The Three Cents coin was minted in the United States from 1851 to 1889, primarily in response to the need for small-denomination currency. The 1866 Three Cents coin includes various types such as the standard issue and collectible patterns or trial coins that were produced for evaluation before final minting. Philadelphia was the main minting location for these coins, which often hold significant value among collectors, particularly rare patterns that showcase unique designs or variations from the typical production run.

Item Denomination Series Year Mint
United States of America 1866 Philadelphia Patterns & Trial Coins 3¢ 3¢ (Three Cents) Patterns & Trial Coins 1866 Philadelphia