Collectible coins, particularly those issued by the United States, encompass a variety of categories, including the **Two and a Half Dollar (quarter eagle)** denomination, which was struck in 1874. This era also saw the creation of **patterns** and **trial coins**, which were experimental pieces not intended for general circulation. Such coins often serve as a critical insight into the designs and minting processes considered during their time, making them highly sought after by collectors due to their rarity and historical significance.

Item Denomination Series Year Mint
United States of America 1874 Philadelphia Patterns & Trial Coins $2.50 $2.50 (Two and a Half Dollars) Patterns & Trial Coins 1874 Philadelphia