Collectible coins refer to currency items valued for their rarity, condition, and historical significance rather than their face value. In the United States, collectible coins include a range of types such as commemorative coins, bullion coins, and historic coins minted by the U.S. Mint. The U.S. Mint also produces medals, which are not currency but are often collected for their artistic and historical merit. The term "Julian" may refer to a classification system of coinage or medals developed by a specific numismatic expert. The year 1866 indicates a potential minting date for certain collectible items, which can evoke interest based on historical context, though many pieces from that time may have an "Unknown" classification due to incomplete records or lack of provenance.

Item Denomination Series Year Mint
(1866-68) J-Pr-42 Av Ulysses S. Grant 18mm Ms Other / Varied U.S. Mint Medals - Julian 1866 Unknown