Collectible coins encompass various types, including commemoratives, bullion, and numismatic pieces, often sought after for their rarity and historical significance. In the United States, coins such as the 1-cent (penny) and 50-cent (half dollar) have become popular among collectors, with specific interest in special editions like Proof Sets. The 1989 Proof Set, produced in San Francisco, includes coins that are struck with a higher quality finish and sold directly to collectors, making them desirable for numismatic investment.

Item Denomination Series Year Mint
1989-S 1c-50c Proof Set 1c-50c Proof Sets 1989 San Francisco