Collectible coins, particularly those from the United States, include a variety of denominations such as the 1-cent (penny) and 50-cent (half dollar) coins. Proof Sets, especially from years like 1987, are popular among collectors due to their exceptional quality and limited mintage. The San Francisco Mint is renowned for producing proof coins with a mirror-like finish and sharp details, making them highly sought after in numismatic collections. These coins often carry premium values due to their rarity and condition.

Item Denomination Series Year Mint
1987-S 1c-50c Proof Set 1c-50c Proof Sets 1987 San Francisco