Collectible coins encompass a wide range of types, including historical, commemorative, and trial coins. In the United States, coins such as the 1907 patterns and trial coins were struck as experimental pieces to test designs and manufacturing processes before mass production. These coins often feature unique designs and variations, making them highly sought after by collectors. The 1907 trial coins, in particular, are notable for their artistic innovations and reflect the evolving nature of American coinage during that period.

Item Denomination Series Year Mint
1907-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1907 Philadelphia