Collectible coins, including those from the United States, encompass various denominations and types such as the 1 cent (penny) and 50 cent (half dollar) coins. Proof sets, particularly those from 1938, are highly sought after by collectors due to their high-quality production and limited availability. The Philadelphia Mint has a significant history in minting collectible coins and is notable for producing many key dates in U.S. numismatics. Collectors often seek these coins for their historical value, rarity, and condition.

Item Denomination Series Year Mint
1938 1c-50c Proof Set 1c-50c Proof Sets 1938 Philadelphia