Collectible coins are specially minted coins that are sought after for their rarity, condition, and historical significance. In the United States, collectible coins include denominations such as the 1-cent (penny) and 50-cent (half dollar) pieces. Proof Sets, particularly from notable years like 1988, consist of coins that are produced using a special minting process to create a high-quality finish. These sets often appeal to collectors and investors due to their limited production and the clarity of their detail, making them valuable in the numismatic market.

Item Denomination Series Year Mint
1988-S 1c-50c Proof Set 1c-50c Proof Sets 1988 San Francisco