Collectible coins, particularly those from the United States, include various denominations such as the 1-cent coin (penny). Proof sets, including those minted in 1976, feature coins produced with a special process that gives them a higher quality finish than standard circulation coins. The 1976 proof sets were minted in San Francisco, showcasing the bicentennial celebration of the United States. These sets often attract collectors due to their limited mintage and distinctive packaging, enhancing their value in numismatic circles.

Item Denomination Series Year Mint
1976-S 1c-$1 Proof Set 1c-$1 Proof Sets 1976 San Francisco