Collectible coins are numismatic items that can include various types such as proof coins, uncirculated coins, and commemorative issues. In the United States, the 1-cent coin, commonly known as the penny, is a significant collectible. Proof sets, particularly those from 1976, often attract collectors due to their unique finishing process that produces a mirror-like surface and sharper detail. These sets typically include coins minted for that year, showcasing designs that may hold historical or cultural significance.

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