Collectible coins in the United States include a variety of types, with fifty-cent coins often being a focal point for collectors. Patterns and trial coins from 1839, minted in Philadelphia, represent important experimental designs and compositions prior to official issuance. These coins were struck to test new designs and are often highly sought after due to their rarity and historical significance within numismatics.

Item Denomination Series Year Mint
United States of America 1839 Philadelphia Patterns & Trial Coins 50¢ 50¢ (Fifty Cents) Patterns & Trial Coins 1839 Philadelphia