Collectible coins from the United States include various denominations, such as the 1 cent (penny) and 50 cent (half dollar) pieces. Proof sets, particularly from 1959, were produced in Philadelphia and are known for their high-quality minting with a reflective finish. These sets typically contain uncirculated versions of coins from that year, making them highly sought after by collectors for their condition and historical significance.

Item Denomination Series Year Mint
1959 1c-50c Proof Set 1c-50c Proof Sets 1959 Philadelphia