Collectible coins encompass a wide variety of types, including patterns, trial coins, and more. Patterns are specially crafted coins that often serve as prototypes for potential circulation issues, while trial coins are struck to test the die and design before full-scale production. An example includes the trial coins from 1855, produced in Philadelphia. These coins offer insights into historical minting practices and can be highly sought after by collectors for their rarity and unique characteristics.

Item Denomination Series Year Mint
1855-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1855 Philadelphia
1855-P (Philadelphia) Patterns & Trial Coins Other / Varied Patterns & Trial Coins 1855 Philadelphia