Collectible coins, such as the 1942 one cent penny trial coins from Philadelphia, are prized by numismatists for their rarity, historical significance, and unique characteristics. Trial coins, or patterns, are experimental pieces struck to test new designs or compositions before official minting. The 1942 one cent penny is particularly notable due to the changes in metal composition during World War II, which adds to its collectibility. Collectors often seek these coins for their aesthetic appeal, historical context, and potential investment value.

Item Denomination Series Year Mint
United States of America 1942 Philadelphia Patterns & Trial Coins 1¢ 1¢ (One Cent, Penny) Patterns & Trial Coins 1942 Philadelphia